/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-
/* $Id$ */
//-------------------------------------------------------------------------
// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
// and fills with them the ESD
// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
-// dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
-//
+// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
+// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
+// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
//-------------------------------------------------------------------------
#include <TMatrixD.h>
#include <TTree.h>
#include <TTreeStream.h>
-#include <TTree.h>
+#include <TDatabasePDG.h>
+#include <TString.h>
+#include <TRandom.h>
-#include "AliESD.h"
+#include "AliESDEvent.h"
+#include "AliESDtrack.h"
+#include "AliESDVertex.h"
#include "AliV0.h"
#include "AliHelix.h"
#include "AliITSRecPoint.h"
-#include "AliITSgeom.h"
-#include "AliITStrackerMI.h"
+#include "AliITSgeomTGeo.h"
+#include "AliITSReconstructor.h"
#include "AliTrackPointArray.h"
#include "AliAlignObj.h"
+#include "AliITSClusterParam.h"
+#include "AliCDBManager.h"
+#include "AliCDBEntry.h"
+#include "AliITSCalibrationSPD.h"
+#include "AliITSCalibrationSDD.h"
+#include "AliITSCalibrationSSD.h"
+#include "AliITSPlaneEff.h"
+#include "AliITSPlaneEffSPD.h"
+#include "AliITSPlaneEffSDD.h"
+#include "AliITSPlaneEffSSD.h"
+#include "AliITStrackerMI.h"
ClassImp(AliITStrackerMI)
+AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
-
-AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[kMaxLayer]; // ITS layers
AliITStrackerMI::AliITStrackerMI():AliTracker(),
fI(0),
fBestTrack(),
fPass(0),
fAfterV0(kFALSE),
fLastLayerToTrackTo(0),
-fCoeficients(0),
+fCoefficients(0),
fEsd(0),
-fDebugStreamer(0){
+fTrackingPhase("Default"),
+fUseTGeo(3),
+fNtracks(0),
+fxOverX0Pipe(-1.),
+fxTimesRhoPipe(-1.),
+fxOverX0PipeTrks(0),
+fxTimesRhoPipeTrks(0),
+fxOverX0ShieldTrks(0),
+fxTimesRhoShieldTrks(0),
+fxOverX0LayerTrks(0),
+fxTimesRhoLayerTrks(0),
+fDebugStreamer(0),
+fPlaneEff(0) {
//Default constructor
+ Int_t i;
+ for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
+ for(i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
+ for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
}
-
-
-AliITStrackerMI::AliITStrackerMI(const AliITSgeom *geom) : AliTracker(),
-fI(kMaxLayer),
+//------------------------------------------------------------------------
+AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
+fI(AliITSgeomTGeo::GetNLayers()),
fBestTrack(),
fTrackToFollow(),
fTrackHypothesys(),
fCurrentEsdTrack(),
fPass(0),
fAfterV0(kFALSE),
-fLastLayerToTrackTo(kLastLayerToTrackTo),
-fCoeficients(0),
+fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
+fCoefficients(0),
fEsd(0),
-fDebugStreamer(0){
+fTrackingPhase("Default"),
+fUseTGeo(3),
+fNtracks(0),
+fxOverX0Pipe(-1.),
+fxTimesRhoPipe(-1.),
+fxOverX0PipeTrks(0),
+fxTimesRhoPipeTrks(0),
+fxOverX0ShieldTrks(0),
+fxTimesRhoShieldTrks(0),
+fxOverX0LayerTrks(0),
+fxTimesRhoLayerTrks(0),
+fDebugStreamer(0),
+fPlaneEff(0) {
//--------------------------------------------------------------------
//This is the AliITStrackerMI constructor
//--------------------------------------------------------------------
- fCoeficients = 0;
+ if (geom) {
+ AliWarning("\"geom\" is actually a dummy argument !");
+ }
+
+ fCoefficients = 0;
fAfterV0 = kFALSE;
- AliITSgeom *g=(AliITSgeom*)geom;
- Float_t x,y,z;
- Int_t i;
- for (i=1; i<kMaxLayer+1; i++) {
- Int_t nlad=g->GetNladders(i);
- Int_t ndet=g->GetNdetectors(i);
- g->GetTrans(i,1,1,x,y,z);
- Double_t r=TMath::Sqrt(x*x + y*y);
+ for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
+ Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
+ Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
+
+ Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
+ AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
Double_t poff=TMath::ATan2(y,x);
Double_t zoff=z;
+ Double_t r=TMath::Sqrt(x*x + y*y);
- g->GetTrans(i,1,2,x,y,z);
+ AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
r += TMath::Sqrt(x*x + y*y);
- g->GetTrans(i,2,1,x,y,z);
+ AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
r += TMath::Sqrt(x*x + y*y);
- g->GetTrans(i,2,2,x,y,z);
+ AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
r += TMath::Sqrt(x*x + y*y);
r*=0.25;
for (Int_t j=1; j<nlad+1; j++) {
for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
- Float_t x,y,zshift; g->GetTrans(i,j,k,x,y,zshift);
- Double_t rot[9]; g->GetRotMatrix(i,j,k,rot);
+ TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
+ const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
+ m.Multiply(tm);
+ Double_t txyz[3]={0.}, xyz[3]={0.};
+ m.LocalToMaster(txyz,xyz);
+ Double_t r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
+ Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
- Double_t phi=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
- phi+=TMath::Pi()/2;
- if (i==1) phi+=TMath::Pi();
- Double_t cp=TMath::Cos(phi), sp=TMath::Sin(phi);
- Double_t r=x*cp+y*sp;
+ if (phi<0) phi+=TMath::TwoPi();
+ else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
new(&det) AliITSdetector(r,phi);
}
- fI=kMaxLayer;
+ fI=AliITSgeomTGeo::GetNLayers();
fPass=0;
fConstraint[0]=1; fConstraint[1]=0;
- Double_t xyz[]={kXV,kYV,kZV}, ers[]={kSigmaXV,kSigmaYV,kSigmaZV};
- SetVertex(xyz,ers);
+ Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
+ AliITSReconstructor::GetRecoParam()->GetYVdef(),
+ AliITSReconstructor::GetRecoParam()->GetZVdef()};
+ Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
+ AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
+ AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
+ SetVertex(xyzVtx,ersVtx);
- for (Int_t i=0; i<kMaxLayer; i++) fLayersNotToSkip[i]=kLayersNotToSkip[i];
- fLastLayerToTrackTo=kLastLayerToTrackTo;
+ for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=AliITSRecoParam::GetLayersNotToSkip(i);
+ fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
for (Int_t i=0;i<100000;i++){
fBestTrackIndex[i]=0;
}
- //
+
+ // store positions of centre of SPD modules (in z)
+ Double_t tr[3];
+ AliITSgeomTGeo::GetTranslation(1,1,1,tr);
+ fSPDdetzcentre[0] = tr[2];
+ AliITSgeomTGeo::GetTranslation(1,1,2,tr);
+ fSPDdetzcentre[1] = tr[2];
+ AliITSgeomTGeo::GetTranslation(1,1,3,tr);
+ fSPDdetzcentre[2] = tr[2];
+ AliITSgeomTGeo::GetTranslation(1,1,4,tr);
+ fSPDdetzcentre[3] = tr[2];
+
+ fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
+ if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
+ AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
+ fUseTGeo = 3;
+ }
+
+ for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
+ for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
+
fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
+ // only for plane efficiency evaluation
+ if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff()) {
+ for(Int_t ilay=0;ilay<6;ilay++) {
+ if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilay)) {
+ if (ilay<2) fPlaneEff = new AliITSPlaneEffSPD();
+ else if (ilay<4) fPlaneEff = new AliITSPlaneEffSDD();
+ else fPlaneEff = new AliITSPlaneEffSSD();
+ break; // only one layer type to skip at once
+ }
+ }
+ if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
+ if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
+ if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
+ fPlaneEff->SetCreateHistos(kTRUE);
+ //fPlaneEff->ReadHistosFromFile();
+ }
+ }
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
fI(tracker.fI),
fBestTrack(tracker.fBestTrack),
fPass(tracker.fPass),
fAfterV0(tracker.fAfterV0),
fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
-fCoeficients(tracker.fCoeficients),
+fCoefficients(tracker.fCoefficients),
fEsd(tracker.fEsd),
-fDebugStreamer(tracker.fDebugStreamer){
+fTrackingPhase(tracker.fTrackingPhase),
+fUseTGeo(tracker.fUseTGeo),
+fNtracks(tracker.fNtracks),
+fxOverX0Pipe(tracker.fxOverX0Pipe),
+fxTimesRhoPipe(tracker.fxTimesRhoPipe),
+fxOverX0PipeTrks(0),
+fxTimesRhoPipeTrks(0),
+fxOverX0ShieldTrks(0),
+fxTimesRhoShieldTrks(0),
+fxOverX0LayerTrks(0),
+fxTimesRhoLayerTrks(0),
+fDebugStreamer(tracker.fDebugStreamer),
+fPlaneEff(tracker.fPlaneEff) {
//Copy constructor
+ Int_t i;
+ for(i=0;i<4;i++) {
+ fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
+ }
+ for(i=0;i<6;i++) {
+ fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
+ fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
+ }
+ for(i=0;i<2;i++) {
+ fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
+ fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
+ }
}
-
+//------------------------------------------------------------------------
AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
//Assignment operator
this->~AliITStrackerMI();
new(this) AliITStrackerMI(tracker);
return *this;
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::~AliITStrackerMI()
{
//
//destructor
//
- if (fCoeficients) delete []fCoeficients;
+ if (fCoefficients) delete [] fCoefficients;
+ DeleteTrksMaterialLUT();
if (fDebugStreamer) {
//fDebugStreamer->Close();
delete fDebugStreamer;
}
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
//--------------------------------------------------------------------
//This function set masks of the layers which must be not skipped
//--------------------------------------------------------------------
- for (Int_t i=0; i<kMaxLayer; i++) fLayersNotToSkip[i]=l[i];
+ for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fLayersNotToSkip[i]=l[i];
}
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
//--------------------------------------------------------------------
//This function loads ITS clusters
Int_t j=0;
Int_t detector=0;
- for (Int_t i=0; i<kMaxLayer; i++) {
+ for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
Int_t ndet=fgLayers[i].GetNdetectors();
Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
for (; j<jmax; j++) {
if (!cTree->GetEvent(j)) continue;
Int_t ncl=clusters->GetEntriesFast();
SignDeltas(clusters,GetZ());
+
while (ncl--) {
AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
- detector = c->GetDetectorIndex();
+ detector=c->GetDetectorIndex();
+
+ if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
+
fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
}
clusters->Delete();
- //add dead zone virtual "cluster"
- if (i<2){
- for (Float_t ydead = 0; ydead < 1.31 ; ydead+=(i+1.)*0.018){
- Int_t lab[4] = {0,0,0,detector};
- Int_t info[3] = {0,0,0};
- Float_t hit[5]={0,0,0.004/12.,0.001/12.,0};
- if (i==0) hit[0] =ydead-0.4;
- if (i==1) hit[0]=ydead-3.75;
- hit[1] =-0.04;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=-7.05;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=-7.15;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1] =0.06;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=7.05;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
- hit[1]=7.25;
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<2.)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab, hit, info));
+ // add dead zone "virtual" cluster in SPD, if there is a cluster within
+ // zwindow cm from the dead zone
+ if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
+ for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
+ Int_t lab[4] = {0,0,0,detector};
+ Int_t info[3] = {0,0,i};
+ Float_t q = 0.; // this identifies virtual clusters
+ Float_t hit[5] = {xdead,
+ 0.,
+ AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2(),
+ AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2(),
+ q};
+ Bool_t local = kTRUE;
+ Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
+ hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
+ hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
+ if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
+ fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
}
- }
+ } // "virtual" clusters in SPD
}
//
return 0;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::UnloadClusters() {
//--------------------------------------------------------------------
//This function unloads ITS clusters
//--------------------------------------------------------------------
- for (Int_t i=0; i<kMaxLayer; i++) fgLayers[i].ResetClusters();
+ for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
}
-
-static Int_t CorrectForDeadZoneMaterial(AliITStrackMI *t) {
+//------------------------------------------------------------------------
+static Int_t CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
//--------------------------------------------------------------------
// Correction for the material between the TPC and the ITS
- // (should it belong to the TPC code ?)
//--------------------------------------------------------------------
- Double_t riw=80., diw=0.0053, x0iw=30; // TPC inner wall ?
- Double_t rcd=61., dcd=0.0053, x0cd=30; // TPC "central drum" ?
- Double_t yr=12.8, dr=0.03; // rods ?
- Double_t zm=0.2, dm=0.40; // membrane
- //Double_t rr=52., dr=0.19, x0r=24., yyr=7.77; //rails
- Double_t rs=50., ds=0.001; // something belonging to the ITS (screen ?)
-
- if (t->GetX() > riw) {
- if (!t->PropagateTo(riw,diw,x0iw)) return 1;
- if (TMath::Abs(t->GetY())>yr) t->CorrectForMaterial(dr);
- if (TMath::Abs(t->GetZ())<zm) t->CorrectForMaterial(dm);
- if (!t->PropagateTo(rcd,dcd,x0cd)) return 1;
- //Double_t x,y,z; t->GetGlobalXYZat(rr,x,y,z);
- //if (TMath::Abs(y)<yyr) t->PropagateTo(rr,dr,x0r);
- if (!t->PropagateTo(rs,ds)) return 1;
- } else if (t->GetX() < rs) {
- if (!t->PropagateTo(rs,-ds)) return 1;
- //Double_t x,y,z; t->GetGlobalXYZat(rr,x,y,z);
- //if (TMath::Abs(y)<yyr) t->PropagateTo(rr,-dr,x0r);
- if (!t->PropagateTo(rcd,-dcd,x0cd)) return 1;
- if (!t->PropagateTo(riw+0.001,-diw,x0iw)) return 1;
+ if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
+ if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
+ if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
+ if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
+ } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
+ if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
+ if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
+ if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
} else {
- ::Error("CorrectForDeadZoneMaterial","track is already in the dead zone !");
- return 1;
+ Error("CorrectForTPCtoITSDeadZoneMaterial","Track is already in the dead zone !");
+ return 0;
}
- return 0;
+ return 1;
}
-
-Int_t AliITStrackerMI::Clusters2Tracks(AliESD *event) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
//--------------------------------------------------------------------
// This functions reconstructs ITS tracks
// The clusters must be already loaded !
//--------------------------------------------------------------------
+
+
+ fTrackingPhase="Clusters2Tracks";
+
TObjArray itsTracks(15000);
fOriginal.Clear();
fEsd = event; // store pointer to the esd
+
+ // temporary (for cosmics)
+ if(event->GetVertex()) {
+ TString title = event->GetVertex()->GetTitle();
+ if(title.Contains("cosmics")) {
+ Double_t xyz[3]={GetX(),GetY(),GetZ()};
+ Double_t exyz[3]={0.1,0.1,0.1};
+ SetVertex(xyz,exyz);
+ }
+ }
+ // temporary
+
{/* Read ESD tracks */
+ Double_t pimass = TDatabasePDG::Instance()->GetParticle(211)->Mass();
Int_t nentr=event->GetNumberOfTracks();
Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
while (nentr--) {
delete t;
continue;
}
- //t->fD[0] = t->GetD(GetX(),GetY());
- //t->fD[1] = t->GetZat(GetX())-GetZ();
t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
- if (t->GetMass()<0.13) t->SetMass(0.13957); // MI look to the esd - mass hypothesys !!!!!!!!!!!
+
+
+ // look at the ESD mass hypothesys !
+ if (t->GetMass()<0.9*pimass) t->SetMass(pimass);
// write expected q
t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
- if (esd->GetV0Index(0)>0 && t->GetD(0)<30){
+ if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
//track - can be V0 according to TPC
- }
- else{
- if (TMath::Abs(t->GetD(0))>10) {
+ } else {
+ if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
delete t;
continue;
- }
-
- if (TMath::Abs(vdist)>20) {
+ }
+ if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
delete t;
continue;
}
- if (TMath::Abs(1/t->Get1Pt())<0.120) {
+ if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
delete t;
continue;
}
-
- if (CorrectForDeadZoneMaterial(t)!=0) {
- //Warning("Clusters2Tracks",
- // "failed to correct for the material in the dead zone !\n");
+ if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
delete t;
continue;
}
Int_t nentr=itsTracks.GetEntriesFast();
fTrackHypothesys.Expand(nentr);
fBestHypothesys.Expand(nentr);
- MakeCoeficients(nentr);
+ MakeCoefficients(nentr);
+ if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
Int_t ntrk=0;
+ // THE TWO TRACKING PASSES
for (fPass=0; fPass<2; fPass++) {
Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
- for (Int_t i=0; i<nentr; i++) {
-// cerr<<fPass<<" "<<i<<'\r';
- fCurrentEsdTrack = i;
- AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(i);
+ for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
+ //cerr<<fPass<<" "<<fCurrentEsdTrack<<'\n';
+ AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
if (t==0) continue; //this track has been already tracked
if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
- //if ( (TMath::Abs(t->GetD(GetX(),GetY())) >3.) && fConstraint[fPass]) continue;
- //if ( (TMath::Abs(t->GetZat(GetX())-GetZ())>3.) && fConstraint[fPass]) continue;
Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
- if ( (TMath::Abs(dz[0])>3.) && fConstraint[fPass]) continue;
- if ( (TMath::Abs(dz[1])>3.) && fConstraint[fPass]) continue;
+ if (fConstraint[fPass]) {
+ if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
+ TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
+ }
Int_t tpcLabel=t->GetLabel(); //save the TPC track label
fI = 6;
ResetTrackToFollow(*t);
ResetBestTrack();
- FollowProlongationTree(t,i,fConstraint[fPass]);
+
+ FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
//
- AliITStrackMI * besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
+ AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
if (!besttrack) continue;
besttrack->SetLabel(tpcLabel);
// besttrack->CookdEdx();
CookLabel(besttrack,0.); //For comparison only
UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- /*
- if ( besttrack->GetNumberOfClusters()<6 && fConstraint[fPass]) {
- continue;
- }
- if (besttrack->fChi2MIP[0]+besttrack->fNUsed>3.5) continue;
- if ( (TMath::Abs(besttrack->fD[0]*besttrack->fD[0]+besttrack->fD[1]*besttrack->fD[1])>0.1) && fConstraint[fPass]) continue;
- //delete itsTracks.RemoveAt(i);
- */
if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
-
t->SetReconstructed(kTRUE);
ntrk++;
}
GetBestHypothesysMIP(itsTracks);
- }
+ } // end loop on the two tracking passes
- //GetBestHypothesysMIP(itsTracks);
- UpdateTPCV0(event);
- FindV02(event);
+ if(event->GetNumberOfV0s()>0) UpdateTPCV0(event);
+ if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) FindV02(event);
fAfterV0 = kTRUE;
- //GetBestHypothesysMIP(itsTracks);
//
itsTracks.Delete();
//
Int_t entries = fTrackHypothesys.GetEntriesFast();
- for (Int_t ientry=0;ientry<entries;ientry++){
+ for (Int_t ientry=0; ientry<entries; ientry++) {
TObjArray * array =(TObjArray*)fTrackHypothesys.UncheckedAt(ientry);
if (array) array->Delete();
delete fTrackHypothesys.RemoveAt(ientry);
fTrackHypothesys.Delete();
fBestHypothesys.Delete();
fOriginal.Clear();
- delete []fCoeficients;
- fCoeficients=0;
+ delete [] fCoefficients;
+ fCoefficients=0;
+ DeleteTrksMaterialLUT();
+
Info("Clusters2Tracks","Number of prolonged tracks: %d\n",ntrk);
+
+ fTrackingPhase="Default";
return 0;
}
-
-
-Int_t AliITStrackerMI::PropagateBack(AliESD *event) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
//--------------------------------------------------------------------
// This functions propagates reconstructed ITS tracks back
// The clusters must be loaded !
//--------------------------------------------------------------------
+ fTrackingPhase="PropagateBack";
Int_t nentr=event->GetNumberOfTracks();
Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
ResetTrackToFollow(*t);
- // propagete to vertex [SR, GSI 17.02.2003]
+ // propagate to vertex [SR, GSI 17.02.2003]
// Start Time measurement [SR, GSI 17.02.2003], corrected by I.Belikov
- if (fTrackToFollow.PropagateTo(3.,0.0028,65.19)) {
- if (fTrackToFollow.PropagateToVertex(event->GetVertex())) {
- fTrackToFollow.StartTimeIntegral();
- }
- fTrackToFollow.PropagateTo(3.,-0.0028,65.19);
+ if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
+ if (fTrackToFollow.PropagateToVertex(event->GetVertex()))
+ fTrackToFollow.StartTimeIntegral();
+ // from vertex to outside pipe
+ CorrectForPipeMaterial(&fTrackToFollow,"outward");
}
fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
- if (RefitAt(49.,&fTrackToFollow,t)) {
- if (CorrectForDeadZoneMaterial(&fTrackToFollow)!=0) {
- //Warning("PropagateBack",
- // "failed to correct for the material in the dead zone !\n");
+ if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,t)) {
+ if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) {
delete t;
continue;
}
Info("PropagateBack","Number of back propagated ITS tracks: %d\n",ntrk);
+ fTrackingPhase="Default";
+
return 0;
}
-
-Int_t AliITStrackerMI::RefitInward(AliESD *event) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
//--------------------------------------------------------------------
// This functions refits ITS tracks using the
// "inward propagated" TPC tracks
// The clusters must be loaded !
//--------------------------------------------------------------------
- RefitV02(event);
+ fTrackingPhase="RefitInward";
+ if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) RefitV02(event);
Int_t nentr=event->GetNumberOfTracks();
Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
continue;
}
t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
- if (CorrectForDeadZoneMaterial(t)!=0) {
- //Warning("RefitInward",
- // "failed to correct for the material in the dead zone !\n");
+ if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
delete t;
continue;
}
fTrackToFollow.ResetCovariance(10.);
//Refitting...
- if (RefitAt(3.7, &fTrackToFollow, t,kTRUE)) {
+ Bool_t pe=AliITSReconstructor::GetRecoParam()->GetComputePlaneEff();
+ if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,kTRUE,pe)) {
fTrackToFollow.SetLabel(t->GetLabel());
// fTrackToFollow.CookdEdx();
CookdEdx(&fTrackToFollow);
CookLabel(&fTrackToFollow,0.0); //For comparison only
- if (fTrackToFollow.PropagateTo(3.,0.0028,65.19)) {//The beam pipe
- AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
- esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit);
- Float_t r[3]={0.,0.,0.};
- Double_t maxD=3.;
+ //The beam pipe
+ if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
+ fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
+ AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
+ //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
+ //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
+ Float_t r[3]={0.,0.,0.};
+ Double_t maxD=3.;
esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
- ntrk++;
+ ntrk++;
}
}
delete t;
Info("RefitInward","Number of refitted tracks: %d\n",ntrk);
+ fTrackingPhase="Default";
+
return 0;
}
-
+//------------------------------------------------------------------------
AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
//--------------------------------------------------------------------
// Return pointer to a given cluster
Int_t c=(index & 0x0fffffff) >> 00;
return fgLayers[l].GetCluster(c);
}
-
-#include "TGeoManager.h"
-#include "TGeoMatrix.h"
-#include "TGeoPhysicalNode.h"
-
+//------------------------------------------------------------------------
Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
- //
+ //--------------------------------------------------------------------
// Get track space point with index i
- //
+ //--------------------------------------------------------------------
+
Int_t l=(index & 0xf0000000) >> 28;
Int_t c=(index & 0x0fffffff) >> 00;
AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
Int_t idet = cl->GetDetectorIndex();
- const char* name = AliAlignObj::SymName((AliAlignObj::ELayerID)
- (l+AliAlignObj::kFirstLayer), idet);
- TGeoPNEntry *mapPN = gGeoManager->GetAlignableEntry(name);
-
- if (!mapPN) return kFALSE;
- TGeoPhysicalNode *node = mapPN->GetPhysicalNode();
- if (!node) {
- gGeoManager->MakeAlignablePN(name);
- node = mapPN->GetPhysicalNode();
- }
- if (!node) return kFALSE;
- TGeoHMatrix* matrix = node->GetMatrix();
- if (!matrix) return kFALSE;
-
- //
- // Calculate the global coordinates
- //
- Double_t localCoord[] = {cl->GetDetLocalX(), 0, cl->GetDetLocalZ()};
- // LG AliAlignObj makes life simple but keep in mind that alignable
- // LG volume doesn't mean sensitive volume. There might be a shift
- // LG between the 2, has it is here for the SPD :
- if (l<2) localCoord[1] = 0.01;
- // LG !!! Check for this when the new geometry comes !!!
- Double_t globalCoord[3] = {0};
- matrix->LocalToMaster(localCoord, globalCoord);
- Float_t xyz[3]= {globalCoord[0], globalCoord[1], globalCoord[2]};
+ Float_t xyz[3];
+ Float_t cov[6];
+ cl->GetGlobalXYZ(xyz);
+ cl->GetGlobalCov(cov);
+ p.SetXYZ(xyz, cov);
- //
- // Calculate the cov matrix
- //
- TGeoRotation rotMatrix(*matrix);
- TGeoRotation rotMatrixTr(rotMatrix.Inverse());
- Double_t sigmaArray[] = {cl->GetSigmaY2(),0,0, 0,0,0, 0,0,cl->GetSigmaZ2()};
- TGeoRotation sigmMatrix;
- sigmMatrix.SetMatrix( sigmaArray );
- sigmMatrix.MultiplyBy(&rotMatrixTr, kFALSE);
- sigmMatrix.MultiplyBy(&rotMatrix, kTRUE);
- const Double_t *globalSigma = sigmMatrix.GetRotationMatrix();
- Float_t cov[6]= { globalSigma[0], globalSigma[1], globalSigma[2],
- globalSigma[4], globalSigma[5],
- globalSigma[8] };
-
- p.SetXYZ(xyz[0],xyz[1],xyz[2],cov);
- AliAlignObj::ELayerID iLayer = AliAlignObj::kInvalidLayer;
+ AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
switch (l) {
case 0:
- iLayer = AliAlignObj::kSPD1;
+ iLayer = AliGeomManager::kSPD1;
break;
case 1:
- iLayer = AliAlignObj::kSPD2;
+ iLayer = AliGeomManager::kSPD2;
break;
case 2:
- iLayer = AliAlignObj::kSDD1;
+ iLayer = AliGeomManager::kSDD1;
break;
case 3:
- iLayer = AliAlignObj::kSDD2;
+ iLayer = AliGeomManager::kSDD2;
break;
case 4:
- iLayer = AliAlignObj::kSSD1;
+ iLayer = AliGeomManager::kSSD1;
break;
case 5:
- iLayer = AliAlignObj::kSSD2;
+ iLayer = AliGeomManager::kSSD2;
break;
default:
AliWarning(Form("Wrong layer index in ITS (%d) !",l));
break;
};
- UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,idet);
+ UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
p.SetVolumeID((UShort_t)volid);
return kTRUE;
}
+//------------------------------------------------------------------------
+Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
+ AliTrackPoint& p, const AliESDtrack *t) {
+ //--------------------------------------------------------------------
+ // Get track space point with index i
+ // (assign error estimated during the tracking)
+ //--------------------------------------------------------------------
+ Int_t l=(index & 0xf0000000) >> 28;
+ Int_t c=(index & 0x0fffffff) >> 00;
+ const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
+ Int_t idet = cl->GetDetectorIndex();
+ const AliITSdetector &det=fgLayers[l].GetDetector(idet);
+
+ // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
+ Float_t detxy[2];
+ detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
+ detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
+ Double_t alpha = t->GetAlpha();
+ Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
+ Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe,AliTracker::GetBz()));
+ phi += alpha-det.GetPhi();
+ Float_t tgphi = TMath::Tan(phi);
+
+ Float_t tgl = t->GetTgl(); // tgl about const along track
+ Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
+
+ Float_t errlocalx,errlocalz;
+ AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errlocalx,errlocalz);
+
+ Float_t xyz[3];
+ Float_t cov[6];
+ cl->GetGlobalXYZ(xyz);
+ // cl->GetGlobalCov(cov);
+ Float_t pos[3] = {0.,0.,0.};
+ AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errlocalx*errlocalx,errlocalz*errlocalz,0);
+ tmpcl.GetGlobalCov(cov);
+
+ p.SetXYZ(xyz, cov);
+
+ AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
+ switch (l) {
+ case 0:
+ iLayer = AliGeomManager::kSPD1;
+ break;
+ case 1:
+ iLayer = AliGeomManager::kSPD2;
+ break;
+ case 2:
+ iLayer = AliGeomManager::kSDD1;
+ break;
+ case 3:
+ iLayer = AliGeomManager::kSDD2;
+ break;
+ case 4:
+ iLayer = AliGeomManager::kSSD1;
+ break;
+ case 5:
+ iLayer = AliGeomManager::kSSD2;
+ break;
+ default:
+ AliWarning(Form("Wrong layer index in ITS (%d) !",l));
+ break;
+ };
+ UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
+ p.SetVolumeID((UShort_t)volid);
+ return kTRUE;
+}
+//------------------------------------------------------------------------
void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
{
//--------------------------------------------------------------------
// Follow prolongation tree
//--------------------------------------------------------------------
//
+ Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
+ Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
+
+
AliESDtrack * esd = otrack->GetESDtrack();
- if (esd->GetV0Index(0)>0){
- //
+ if (esd->GetV0Index(0)>0) {
// TEMPORARY SOLLUTION: map V0 indexes to point to proper track
- // mapping of esd track is different as its track in Containers
+ // mapping of ESD track is different as ITS track in Containers
// Need something more stable
- // Indexes are set back againg to the ESD track indexes in UpdateTPCV0
+ // Indexes are set back again to the ESD track indexes in UpdateTPCV0
for (Int_t i=0;i<3;i++){
Int_t index = esd->GetV0Index(i);
if (index==0) break;
AliESDv0 * vertex = fEsd->GetV0(index);
if (vertex->GetStatus()<0) continue; // rejected V0
//
- if (esd->GetSign()>0) {
- vertex->SetIndex(0,esdindex);
- }
- else{
- vertex->SetIndex(1,esdindex);
- }
+ if (esd->GetSign()>0) {
+ vertex->SetIndex(0,esdindex);
+ } else {
+ vertex->SetIndex(1,esdindex);
+ }
}
}
TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
new (&(tracks[6][0])) AliITStrackMI(*otrack);
ntracks[6]=1;
for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
+ Int_t modstatus = 1; // found
+ Float_t xloc,zloc;
//
//
// follow prolongations
- for (Int_t ilayer=5;ilayer>=0;ilayer--){
+ for (Int_t ilayer=5; ilayer>=0; ilayer--) {
+ fI = ilayer;
//
- AliITSlayer &layer=fgLayers[ilayer];
- Double_t r=layer.GetR();
+ AliITSlayer &layer=fgLayers[ilayer];
+ Double_t r = layer.GetR();
ntracks[ilayer]=0;
//
//
- Int_t nskipped=0;
+ Int_t nskipped=0;
Float_t nused =0;
- for (Int_t itrack =0;itrack<ntracks[ilayer+1];itrack++){
+ for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
//set current track
if (ntracks[ilayer]>=100) break;
if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
}
new(¤ttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
- if (ilayer==3 || ilayer==1) {
- Double_t rs=0.5*(fgLayers[ilayer+1].GetR() + r);
- Double_t d=0.0034, x0=38.6;
- if (ilayer==1) {rs=9.; d=0.0097; x0=42;}
- if (!currenttrack1.PropagateTo(rs,d,x0)) {
- continue;
- }
- }
- //
- //find intersection with layer
- Double_t x,y,z;
- if (!currenttrack1.GetGlobalXYZat(r,x,y,z)) {
- continue;
- }
- Double_t phi=TMath::ATan2(y,x);
+
+ // material between SSD and SDD, SDD and SPD
+ if (ilayer==3)
+ if(!CorrectForShieldMaterial(¤ttrack1,"SDD","inward")) continue;
+ if (ilayer==1)
+ if(!CorrectForShieldMaterial(¤ttrack1,"SPD","inward")) continue;
+
+ // detector number
+ Double_t phi,z;
+ if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
Int_t idet=layer.FindDetectorIndex(phi,z);
- if (idet<0) {
+
+ Double_t trackGlobXYZ1[3];
+ currenttrack1.GetXYZ(trackGlobXYZ1);
+
+ // Get the budget to the primary vertex for the current track being prolonged
+ Double_t budgetToPrimVertex = GetEffectiveThickness();
+
+ // check if we allow a prolongation without point
+ Int_t skip = CheckSkipLayer(¤ttrack1,ilayer,idet);
+ if (skip) {
+ AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
+ // propagate to the layer radius
+ Double_t xToGo; vtrack->GetLocalXat(r,xToGo);
+ vtrack->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
+ // apply correction for material of the current layer
+ CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
+ vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
+ vtrack->SetClIndex(ilayer,0);
+ modstatus = (skip==1 ? 3 : 4); // skipped : out in z
+ LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc); // local module coords
+ vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
+ if(constrain) vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
+ ntracks[ilayer]++;
continue;
}
- //propagate to the intersection
+
+ // track outside layer acceptance in z
+ if (idet<0) continue;
+
+ //propagate to the intersection with the detector plane
const AliITSdetector &det=layer.GetDetector(idet);
- phi=det.GetPhi();
new(¤ttrack2) AliITStrackMI(currenttrack1);
- if (!currenttrack1.Propagate(phi,det.GetR())) {
- continue;
- }
- currenttrack2.Propagate(phi,det.GetR()); //
+ if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
+ LocalModuleCoord(ilayer,idet,¤ttrack1,xloc,zloc); // local module coords
+ currenttrack2.Propagate(det.GetPhi(),det.GetR());
currenttrack1.SetDetectorIndex(idet);
currenttrack2.SetDetectorIndex(idet);
-
- //
- //
- Double_t dz=7.5*TMath::Sqrt(currenttrack1.GetSigmaZ2() + 16.*kSigmaZ2[ilayer]);
- Double_t dy=7.5*TMath::Sqrt(currenttrack1.GetSigmaY2() + 16.*kSigmaY2[ilayer]);
+
+ //***************
+ // DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
//
- Bool_t isBoundary=kFALSE;
- if (currenttrack1.GetY()-dy< det.GetYmin()+0.2) isBoundary = kTRUE;
- if (currenttrack1.GetY()+dy> det.GetYmax()-0.2) isBoundary = kTRUE;
- if (currenttrack1.GetZ()-dz< det.GetZmin()+0.2) isBoundary = kTRUE;
- if (currenttrack1.GetZ()+dz> det.GetZmax()-0.2) isBoundary = kTRUE;
+ Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
+ TMath::Sqrt(currenttrack1.GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
+ Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
+ TMath::Sqrt(currenttrack1.GetSigmaY2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
- if (isBoundary){ // track at boundary between detectors
- Float_t maxtgl = TMath::Abs(currenttrack1.GetTgl());
- if (maxtgl>1) maxtgl=1;
- dz = TMath::Sqrt(dz*dz+0.25*maxtgl*maxtgl);
- //
- Float_t maxsnp = TMath::Abs(currenttrack1.GetSnp());
- if (maxsnp>0.95) continue;
- //if (maxsnp>0.5) maxsnp=0.5;
- dy=TMath::Sqrt(dy*dy+0.25*maxsnp*maxsnp);
- }
+ // track at boundary between detectors, enlarge road
+ Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
+ if ( (currenttrack1.GetY()-dy < det.GetYmin()+boundaryWidth) ||
+ (currenttrack1.GetY()+dy > det.GetYmax()-boundaryWidth) ||
+ (currenttrack1.GetZ()-dz < det.GetZmin()+boundaryWidth) ||
+ (currenttrack1.GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
+ Float_t tgl = TMath::Abs(currenttrack1.GetTgl());
+ if (tgl > 1.) tgl=1.;
+ Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
+ dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
+ Float_t snp = TMath::Abs(currenttrack1.GetSnp());
+ if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) continue;
+ dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
+ } // boundary
- Double_t zmin=currenttrack1.GetZ() - dz;
- Double_t zmax=currenttrack1.GetZ() + dz;
- Double_t ymin=currenttrack1.GetY() + r*phi - dy;
- Double_t ymax=currenttrack1.GetY() + r*phi + dy;
+ // road in global (rphi,z) [i.e. in tracking ref. system]
+ Double_t zmin = currenttrack1.GetZ() - dz;
+ Double_t zmax = currenttrack1.GetZ() + dz;
+ Double_t ymin = currenttrack1.GetY() + r*det.GetPhi() - dy;
+ Double_t ymax = currenttrack1.GetY() + r*det.GetPhi() + dy;
+
+ // select clusters in road
layer.SelectClusters(zmin,zmax,ymin,ymax);
+ //********************
+
+ // Define criteria for track-cluster association
+ Double_t msz = currenttrack1.GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
+ Double_t msy = currenttrack1.GetSigmaY2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
+ if (constrain) {
+ msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
+ msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
+ } else {
+ msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
+ msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
+ }
+ msz = 1./msz; // 1/RoadZ^2
+ msy = 1./msy; // 1/RoadY^2
//
- // loop over all possible prolongations
//
- Double_t msz=1./((currenttrack1.GetSigmaZ2() + 16.*kSigmaZ2[ilayer]));
- Double_t msy=1./((currenttrack1.GetSigmaY2() + 16.*kSigmaY2[ilayer]));
- if (constrain){
- msy/=60; msz/=60.;
- }
- else{
- msy/=50; msz/=50.;
- }
+ // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
//
- const AliITSRecPoint *c=0; Int_t ci=-1;
- Double_t chi2=12345.;
- Int_t deadzone=0;
+ const AliITSRecPoint *cl=0;
+ Int_t clidx=-1;
+ Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
+ Bool_t deadzoneSPD=kFALSE;
currenttrack = ¤ttrack1;
- while ((c=layer.GetNextCluster(ci))!=0) {
+
+ // check if the road contains a dead zone
+ Int_t dead = CheckDeadZone(ilayer,idet,zmin,zmax);
+ // create a prolongation without clusters (check also if there are no clusters in the road)
+ if (dead ||
+ ((layer.GetNextCluster(clidx,kTRUE))==0 &&
+ AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
+ AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
+ updatetrack->SetClIndex(ilayer,0);
+ if (dead==0) {
+ modstatus = 5; // no cls in road
+ } else if (dead==1) {
+ modstatus = 7; // holes in z in SPD
+ } else if (dead==2) {
+ modstatus = 2; // dead from OCDB
+ }
+ updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
+ // apply correction for material of the current layer
+ CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
+ if (constrain) { // apply vertex constrain
+ updatetrack->SetConstrain(constrain);
+ Bool_t isPrim = kTRUE;
+ if (ilayer<4) { // check that it's close to the vertex
+ updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
+ if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
+ AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
+ TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
+ AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
+ }
+ if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
+ }
+ if (dead) {
+ updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
+ if (dead==1) { // dead zone at z=0,+-7cm in SPD
+ updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
+ deadzoneSPD=kTRUE;
+ }
+ }
+ ntracks[ilayer]++;
+ }
+
+ clidx=-1;
+ // loop over clusters in the road
+ while ((cl=layer.GetNextCluster(clidx))!=0) {
if (ntracks[ilayer]>95) break; //space for skipped clusters
- Bool_t change =kFALSE;
- if (c->GetQ()==0 && (deadzone==1)) continue;
- Int_t idet=c->GetDetectorIndex();
- if (currenttrack->GetDetectorIndex()!=idet) {
+ Bool_t changedet =kFALSE;
+ if (cl->GetQ()==0 && deadzoneSPD==kTRUE) continue;
+ Int_t idet=cl->GetDetectorIndex();
+
+ if (currenttrack->GetDetectorIndex()==idet) { // track already on the cluster's detector
+ // a first cut on track-cluster distance
+ if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
+ (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
+ continue; // cluster not associated to track
+ } else { // have to move track to cluster's detector
const AliITSdetector &det=layer.GetDetector(idet);
+ // a first cut on track-cluster distance
Double_t y,z;
if (!currenttrack2.GetProlongationFast(det.GetPhi(),det.GetR(),y,z)) continue;
- Float_t pz = (z - c->GetZ()) , py=(y - c->GetY());
- if (pz*pz*msz+py*py*msy>1.) continue;
+ if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
+ (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
+ continue; // cluster not associated to track
//
new (&backuptrack) AliITStrackMI(currenttrack2);
- change = kTRUE;
+ changedet = kTRUE;
currenttrack =¤ttrack2;
if (!currenttrack->Propagate(det.GetPhi(),det.GetR())) {
new (currenttrack) AliITStrackMI(backuptrack);
- change = kFALSE;
+ changedet = kFALSE;
continue;
}
currenttrack->SetDetectorIndex(idet);
- }
- else{
- Float_t pz = (currenttrack->GetZ() - c->GetZ()) , py=(currenttrack->GetY() - c->GetY());
- if (pz*pz*msz+py*py*msy>1.) continue;
+ // Get again the budget to the primary vertex
+ // for the current track being prolonged, if had to change detector
+ //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
}
- chi2=GetPredictedChi2MI(currenttrack,c,ilayer);
- if (chi2<kMaxChi2s[ilayer]){
- if (c->GetQ()==0) deadzone=1; // take dead zone only once
+ // calculate track-clusters chi2
+ chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
+ // chi2 cut
+ if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
+ if (cl->GetQ()==0) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
if (ntracks[ilayer]>=100) continue;
AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
updatetrack->SetClIndex(ilayer,0);
- if (change){
- new (¤ttrack2) AliITStrackMI(backuptrack);
- }
- if (c->GetQ()!=0){
- if (!UpdateMI(updatetrack,c,chi2,(ilayer<<28)+ci)) continue;
- updatetrack->SetSampledEdx(c->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
- }
- else {
+ if (changedet) new (¤ttrack2) AliITStrackMI(backuptrack);
+
+ if (cl->GetQ()!=0) { // real cluster
+ if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) continue;
+ updatetrack->SetSampledEdx(cl->GetQ(),updatetrack->GetNumberOfClusters()-1); //b.b.
+ modstatus = 1; // found
+ } else { // virtual cluster in dead zone
updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
- updatetrack->SetDeadZoneProbability(GetDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
+ updatetrack->SetDeadZoneProbability(GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
+ modstatus = 7; // holes in z in SPD
}
- if (c->IsUsed()){
- updatetrack->IncrementNUsed();
+
+ if (changedet) {
+ Float_t xlocnewdet,zlocnewdet;
+ LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet); // local module coords
+ updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
+ } else {
+ updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
}
- Double_t x0;
- Double_t d=layer.GetThickness(updatetrack->GetY(),updatetrack->GetZ(),x0);
- updatetrack->CorrectForMaterial(d,x0);
- if (constrain) {
+ if (cl->IsUsed()) updatetrack->IncrementNUsed();
+
+ // apply correction for material of the current layer
+ CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
+
+ if (constrain) { // apply vertex constrain
updatetrack->SetConstrain(constrain);
- fI = ilayer;
- Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- Double_t xyz[]={GetX(),GetY(),GetZ()};
- Double_t ptfactor = 1;
- Double_t ers[]={GetSigmaX()*ptfactor,GetSigmaY()*ptfactor,GetSigmaZ()};
Bool_t isPrim = kTRUE;
- if (ilayer<4){
- //updatetrack->fD[0] = updatetrack->GetD(GetX(),GetY());
- //updatetrack->fD[1] = updatetrack->GetZat(GetX())-GetZ();
+ if (ilayer<4) { // check that it's close to the vertex
updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
- if ( TMath::Abs(updatetrack->GetD(0)/(1.+ilayer))>0.4 || TMath::Abs(updatetrack->GetD(1)/(1.+ilayer))>0.4) isPrim=kFALSE;
+ if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
+ AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
+ TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
+ AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
}
- if (isPrim) updatetrack->Improve(d,xyz,ers);
+ if (isPrim) updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
} //apply vertex constrain
ntracks[ilayer]++;
- } // create new hypothesy
- } // loop over possible cluster prolongation
- // if (constrain&&itrack<2&¤ttrack1.fNSkipped==0 && deadzone==0){
- if (constrain&&itrack<2&¤ttrack1.GetNSkipped()==0 && deadzone==0&&ntracks[ilayer]<100){
+ } // create new hypothesis
+ } // loop over possible prolongations
+
+ // allow one prolongation without clusters
+ if (constrain && itrack<=1 && currenttrack1.GetNSkipped()==0 && deadzoneSPD==kFALSE && ntracks[ilayer]<100) {
AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
+ // apply correction for material of the current layer
+ CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
vtrack->SetClIndex(ilayer,0);
- fI = ilayer;
- Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- Double_t xyz[]={GetX(),GetY(),GetZ()};
- Double_t ers[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
- vtrack->Improve(d,xyz,ers);
+ modstatus = 3; // skipped
+ vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
+ vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
vtrack->IncrementNSkipped();
ntracks[ilayer]++;
}
- if (constrain&&itrack<1&&TMath::Abs(currenttrack1.GetTgl())>1.1){ //big theta -- for low mult. runs
+ // allow one prolongation without clusters for tracks with |tgl|>1.1
+ if (constrain && itrack==0 && TMath::Abs(currenttrack1.GetTgl())>1.1) { //big theta - for low flux
AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
+ // apply correction for material of the current layer
+ CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
vtrack->SetClIndex(ilayer,0);
- fI = ilayer;
- Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
- Double_t xyz[]={GetX(),GetY(),GetZ()};
- Double_t ers[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
- vtrack->Improve(d,xyz,ers);
+ modstatus = 3; // skipped
+ vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
+ vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
ntracks[ilayer]++;
}
- } //loop over track candidates
+ } // loop over tracks in layer ilayer+1
+
+ //loop over track candidates for the current layer
//
//
Int_t accepted=0;
- Int_t golds=0;
+ Int_t golden=0;
for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
- if ( normalizedchi2[itrack]<3+0.5*ilayer) golds++;
- if (ilayer>4) accepted++;
- else{
- if ( constrain && normalizedchi2[itrack]<kMaxNormChi2C[ilayer]+1) accepted++;
- if (!constrain && normalizedchi2[itrack]<kMaxNormChi2NonC[ilayer]+1) accepted++;
+ if (normalizedchi2[itrack] <
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
+ if (ilayer>4) {
+ accepted++;
+ } else {
+ if (constrain) { // constrain
+ if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
+ accepted++;
+ } else { // !constrain
+ if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
+ accepted++;
+ }
}
}
- TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
+ // sort tracks by increasing normalized chi2
+ TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
- if (ntracks[ilayer]<golds+2+ilayer) ntracks[ilayer]=TMath::Min(golds+2+ilayer,accepted);
+ if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
if (ntracks[ilayer]>90) ntracks[ilayer]=90;
- } //loop over layers
- //printf("%d\t%d\t%d\t%d\t%d\t%d\n",ntracks[0],ntracks[1],ntracks[2],ntracks[3],ntracks[4],ntracks[5]);
- Int_t max = constrain? 20: 5;
+ } // end loop over layers
+
- for (Int_t i=0;i<TMath::Min(max,ntracks[0]);i++) {
+ //
+ // Now select tracks to be kept
+ //
+ Int_t max = constrain ? 20 : 5;
+
+ // tracks that reach layer 0 (SPD inner)
+ for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
AliITStrackMI & track= tracks[0][nindexes[0][i]];
if (track.GetNumberOfClusters()<2) continue;
- if (!constrain&&track.GetNormChi2(0)>7.)continue;
+ if (!constrain && track.GetNormChi2(0) >
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
+ continue;
+ }
AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}
+
+ // tracks that reach layer 1 (SPD outer)
for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
AliITStrackMI & track= tracks[1][nindexes[1][i]];
if (track.GetNumberOfClusters()<4) continue;
- if (!constrain&&track.GetNormChi2(1)>7.)continue;
+ if (!constrain && track.GetNormChi2(1) >
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
if (constrain) track.IncrementNSkipped();
if (!constrain) {
track.SetD(0,track.GetD(GetX(),GetY()));
}
AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}
- //}
-
+
+ // tracks that reach layer 2 (SDD inner), only during non-constrained pass
if (!constrain){
for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
AliITStrackMI & track= tracks[2][nindexes[2][i]];
if (track.GetNumberOfClusters()<3) continue;
- if (!constrain&&track.GetNormChi2(2)>7.)continue;
+ if (!constrain && track.GetNormChi2(2) >
+ AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
if (constrain) track.SetNSkipped(track.GetNSkipped()+2);
if (!constrain){
track.SetD(0,track.GetD(GetX(),GetY()));
}
}
- if (!constrain){
+ if (!constrain) {
//
- // register best tracks - important for V0 finder
+ // register best track of each layer - important for V0 finder
//
for (Int_t ilayer=0;ilayer<5;ilayer++){
if (ntracks[ilayer]==0) continue;
for (Int_t i=0;i<3;i++){
Int_t index = otrack->GetESDtrack()->GetV0Index(i);
if (index==0) break;
- AliV0 * vertex = (AliV0*)fEsd->GetV0(index);
+ AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
if (vertex->GetStatus()<0) continue; // rejected V0
//
if (otrack->GetSign()>0) {
if (track.GetSign()>0) {
vertex->SetParamP(track);
vertex->Update(fprimvertex);
- // vertex->SetIndex(0,track.fESDtrack->GetID());
+ //vertex->SetIndex(0,track.fESDtrack->GetID());
if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}else{
vertex->SetParamN(track);
}
vertex->SetStatus(vertex->GetStatus()+1);
}else{
- // vertex->SetStatus(-2); // reject V0 - not enough clusters
+ //vertex->SetStatus(-2); // reject V0 - not enough clusters
}
}
- // if (nearestold>3){
-// Int_t indexlayer = (ntracks[0]>0)? 0:1;
-// if (ntracks[indexlayer]>0){
-// AliITStrackMI & track= tracks[indexlayer][nindexes[indexlayer][0]];
-// if (track.GetNumberOfClusters()>4&&track.fNormChi2[indexlayer]<4){
-// vertex->SetStatus(-1); // reject V0 - clusters before
-// }
-// }
-// }
}
- }
+ }
+
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
{
//--------------------------------------------------------------------
//
return fgLayers[layer];
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::AliITSlayer():
fR(0),
fPhiOffset(0),
//--------------------------------------------------------------------
//default AliITSlayer constructor
//--------------------------------------------------------------------
- for (Int_t i=0; i<kMaxClusterPerLayer;i++) {
+ for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
fClusterWeight[i]=0;
fClusterTracks[0][i]=-1;
fClusterTracks[1][i]=-1;
fClusterTracks[3][i]=-1;
}
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::
AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
fR(r),
//main AliITSlayer constructor
//--------------------------------------------------------------------
fDetectors=new AliITSdetector[fNladders*fNdetectors];
- fRoad=2*fR*TMath::Sqrt(3.14/1.);//assuming that there's only one cluster
+ fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
}
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
fR(layer.fR),
fPhiOffset(layer.fPhiOffset),
fRoad(layer.fRoad){
//Copy constructor
}
-
-
+//------------------------------------------------------------------------
AliITStrackerMI::AliITSlayer::~AliITSlayer() {
//--------------------------------------------------------------------
// AliITSlayer destructor
//--------------------------------------------------------------------
delete[] fDetectors;
for (Int_t i=0; i<fN; i++) delete fClusters[i];
- for (Int_t i=0; i<kMaxClusterPerLayer;i++) {
+ for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
fClusterWeight[i]=0;
fClusterTracks[0][i]=-1;
fClusterTracks[1][i]=-1;
fClusterTracks[3][i]=-1;
}
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::ResetClusters() {
//--------------------------------------------------------------------
// This function removes loaded clusters
//--------------------------------------------------------------------
for (Int_t i=0; i<fN; i++) delete fClusters[i];
- for (Int_t i=0; i<kMaxClusterPerLayer;i++){
+ for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
fClusterWeight[i]=0;
fClusterTracks[0][i]=-1;
fClusterTracks[1][i]=-1;
fN=0;
fI=0;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::ResetWeights() {
//--------------------------------------------------------------------
// This function reset weights of the clusters
//--------------------------------------------------------------------
- for (Int_t i=0; i<kMaxClusterPerLayer;i++) {
+ for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
fClusterWeight[i]=0;
fClusterTracks[0][i]=-1;
fClusterTracks[1][i]=-1;
}
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::ResetRoad() {
//--------------------------------------------------------------------
// This function calculates the road defined by the cluster density
for (Int_t i=0; i<fN; i++) {
if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
}
- //if (n>1) fRoad=2*fR*TMath::Sqrt(3.14/n);
- if (n>1) fRoad=2*fR*TMath::Sqrt(3.14/n);
+ if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
}
-
-
-Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *c) {
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
//--------------------------------------------------------------------
//This function adds a cluster to this layer
//--------------------------------------------------------------------
- if (fN==kMaxClusterPerLayer) {
+ if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
::Error("InsertCluster","Too many clusters !\n");
return 1;
}
fCurrentSlice=-1;
- fClusters[fN]=c;
+ fClusters[fN]=cl;
fN++;
- AliITSdetector &det=GetDetector(c->GetDetectorIndex());
- if (c->GetY()<det.GetYmin()) det.SetYmin(c->GetY());
- if (c->GetY()>det.GetYmax()) det.SetYmax(c->GetY());
- if (c->GetZ()<det.GetZmin()) det.SetZmin(c->GetZ());
- if (c->GetZ()>det.GetZmax()) det.SetZmax(c->GetZ());
+ AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
+ if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
+ if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
+ if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
+ if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
return 0;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::SortClusters()
{
//
Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
// slice 5
for (Int_t slice=0; slice<6;slice++){
- if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<kMaxClusterPerLayer5){
+ if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
fClusters5[slice][fN5[slice]] = fClusters[i];
fY5[slice][fN5[slice]] = curY;
fZ5[slice][fN5[slice]] = fZ[i];
}
// slice 10
for (Int_t slice=0; slice<11;slice++){
- if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<kMaxClusterPerLayer10){
+ if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
fClusters10[slice][fN10[slice]] = fClusters[i];
fY10[slice][fN10[slice]] = curY;
fZ10[slice][fN10[slice]] = fZ[i];
}
// slice 20
for (Int_t slice=0; slice<21;slice++){
- if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<kMaxClusterPerLayer20){
+ if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
fClusters20[slice][fN20[slice]] = fClusters[i];
fY20[slice][fN20[slice]] = curY;
fZ20[slice][fN20[slice]] = fZ[i];
//
for (Int_t i=0;i<fN-1;i++){
if (fZ[i]>fZ[i+1]){
- printf("Bugg\n");
+ printf("Bug\n");
}
}
//
for (Int_t slice=0;slice<21;slice++)
for (Int_t i=0;i<fN20[slice]-1;i++){
if (fZ20[slice][i]>fZ20[slice][i+1]){
- printf("Bugg\n");
+ printf("Bug\n");
}
}
}
-
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
//--------------------------------------------------------------------
// This function returns the index of the nearest cluster
}
return m;
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AliITSlayer::
SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
//--------------------------------------------------------------------
Double_t circle=2*TMath::Pi()*fR;
fYmin = ymin; fYmax =ymax;
Float_t ymiddle = (fYmin+fYmax)*0.5;
- if (ymiddle<fYB[0]) {fYmin+=circle; fYmax+=circle;ymiddle+=circle;}
- else{
- if (ymiddle>fYB[1]) {fYmin-=circle; fYmax-=circle;ymiddle-=circle;}
+ if (ymiddle<fYB[0]) {
+ fYmin+=circle; fYmax+=circle; ymiddle+=circle;
+ } else if (ymiddle>fYB[1]) {
+ fYmin-=circle; fYmax-=circle; ymiddle-=circle;
}
+
//
fCurrentSlice =-1;
// defualt take all
if (slice<0) slice=0;
if (slice>5) slice=5;
Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
- if ( isOK){
+ if (isOK) {
fCurrentSlice=slice;
fClustersCs = fClusters5[fCurrentSlice];
fClusterIndexCs = fClusterIndex5[fCurrentSlice];
fImax = TMath::Min(FindClusterIndex(zmax)+1,fNcs);
fSkip = 0;
fAccepted =0;
-}
-
-
-
+ return;
+}
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::AliITSlayer::
FindDetectorIndex(Double_t phi, Double_t z) const {
//--------------------------------------------------------------------
//This function finds the detector crossed by the track
//--------------------------------------------------------------------
- Double_t dphi=-(phi-fPhiOffset);
+ Double_t dphi;
+ if (fZOffset<0) // old geometry
+ dphi = -(phi-fPhiOffset);
+ else // new geometry
+ dphi = phi-fPhiOffset;
+
+
if (dphi < 0) dphi += 2*TMath::Pi();
else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
if (np>=fNladders) np-=fNladders;
if (np<0) np+=fNladders;
+
Double_t dz=fZOffset-z;
- Int_t nz=Int_t(dz*(fNdetectors-1)*0.5/fZOffset+0.5);
+ Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
+ Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
if (nz>=fNdetectors) return -1;
if (nz<0) return -1;
return np*fNdetectors + nz;
}
-
-
-const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci){
+//------------------------------------------------------------------------
+const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
+{
//--------------------------------------------------------------------
// This function returns clusters within the "window"
//--------------------------------------------------------------------
- if (fCurrentSlice<0){
+ if (fCurrentSlice<0) {
Double_t rpi2 = 2.*fR*TMath::Pi();
for (Int_t i=fI; i<fImax; i++) {
Double_t y = fY[i];
if (y>fYmax) continue;
if (fClusters[i]->GetQ()==0&&fSkip==2) continue;
ci=i;
- fI=i+1;
+ if (!test) fI=i+1;
return fClusters[i];
}
- }
- else{
+ } else {
for (Int_t i=fI; i<fImax; i++) {
if (fYcs[i]<fYmin) continue;
if (fYcs[i]>fYmax) continue;
if (fClustersCs[i]->GetQ()==0&&fSkip==2) continue;
ci=fClusterIndexCs[i];
- fI=i+1;
+ if (!test) fI=i+1;
return fClustersCs[i];
}
}
return 0;
}
-
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
const {
//--------------------------------------------------------------------
- //This function returns the layer thickness at this point (units X0)
+ // This function returns the layer thickness at this point (units X0)
//--------------------------------------------------------------------
Double_t d=0.0085;
- x0=21.82;
+ x0=AliITSRecoParam::GetX0Air();
if (43<fR&&fR<45) { //SSD2
Double_t dd=0.0034;
d=dd;
Double_t dd=0.0063; x0=21.5;
d=dd;
if (TMath::Abs(y-3.08)>0.5) d+=dd;
- //if (TMath::Abs(y-3.08)>0.45) d+=dd;
- if (TMath::Abs(y-3.03)<0.10) {d+=0.014;}
+ if (TMath::Abs(y-3.03)<0.10) d+=0.014;
} else
if (3<fR&&fR<5) { //SPD1
Double_t dd=0.0063; x0=21.5;
d=dd;
if (TMath::Abs(y+0.21)>0.6) d+=dd;
- //if (TMath::Abs(y+0.21)>0.45) d+=dd;
- if (TMath::Abs(y+0.10)<0.10) {d+=0.014;}
+ if (TMath::Abs(y+0.10)<0.10) d+=0.014;
}
return d;
}
-
-Double_t AliITStrackerMI::GetEffectiveThickness(Double_t y,Double_t z) const
+//------------------------------------------------------------------------
+Double_t AliITStrackerMI::GetEffectiveThickness()
{
//--------------------------------------------------------------------
- //Returns the thickness between the current layer and the vertex (units X0)
+ // Returns the thickness between the current layer and the vertex (units X0)
//--------------------------------------------------------------------
- Double_t d=0.0028*3*3; //beam pipe
- Double_t x0=0;
+ if(fUseTGeo!=0) {
+ if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
+ if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
+ if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
+ }
+
+ // beam pipe
+ Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
+ Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
+
+ // layers
+ Double_t x0=0;
Double_t xn=fgLayers[fI].GetR();
for (Int_t i=0; i<fI; i++) {
Double_t xi=fgLayers[i].GetR();
- d+=fgLayers[i].GetThickness(y,z,x0)*xi*xi;
+ Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
+ d+=dLayer*xi*xi;
}
+ // shields
if (fI>1) {
- Double_t xi=9.;
- d+=0.0097*xi*xi;
+ Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
+ d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
}
-
if (fI>3) {
- Double_t xi=0.5*(fgLayers[3].GetR()+fgLayers[4].GetR());
- d+=0.0034*xi*xi;
+ Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
+ d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
}
-
return d/(xn*xn);
}
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
- //--------------------------------------------------------------------
+ //-------------------------------------------------------------------
// This function returns number of clusters within the "window"
//--------------------------------------------------------------------
Int_t ncl=0;
}
return ncl;
}
-
-Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *t,
- const AliITStrackMI *c, Bool_t extra) {
+//------------------------------------------------------------------------
+Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
+ const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
+{
//--------------------------------------------------------------------
- // This function refits the track "t" at the position "x" using
- // the clusters from "c"
+ // This function refits the track "track" at the position "x" using
+ // the clusters from "clusters"
// If "extra"==kTRUE,
- // the clusters from overlapped modules get attached to "t"
+ // the clusters from overlapped modules get attached to "track"
+ // If "planeff"==kTRUE,
+ // special approach for plane efficiency evaluation is applyed
//--------------------------------------------------------------------
- Int_t index[kMaxLayer];
+
+ Int_t index[AliITSgeomTGeo::kNLayers];
Int_t k;
- for (k=0; k<kMaxLayer; k++) index[k]=-1;
- Int_t nc=c->GetNumberOfClusters();
+ for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
+ Int_t nc=clusters->GetNumberOfClusters();
for (k=0; k<nc; k++) {
- Int_t idx=c->GetClusterIndex(k),nl=(idx&0xf0000000)>>28;
- index[nl]=idx;
+ Int_t idx=clusters->GetClusterIndex(k);
+ Int_t ilayer=(idx&0xf0000000)>>28;
+ index[ilayer]=idx;
}
- Int_t from, to, step;
- if (xx > t->GetX()) {
- from=0; to=kMaxLayer;
- step=+1;
- } else {
- from=kMaxLayer-1; to=-1;
- step=-1;
- }
-
- for (Int_t i=from; i != to; i += step) {
- AliITSlayer &layer=fgLayers[i];
- Double_t r=layer.GetR();
-
- {
- Double_t hI=i-0.5*step;
- if (TMath::Abs(hI-1.5)<0.01 || TMath::Abs(hI-3.5)<0.01) {
- Double_t rs=0.5*(fgLayers[i-step].GetR() + r);
- Double_t d=0.0034, x0=38.6;
- if (TMath::Abs(hI-1.5)<0.01) {rs=9.; d=0.0097; x0=42;}
- if (!t->PropagateTo(rs,-step*d,x0)) {
- return kFALSE;
- }
- }
- }
-
- // remember old position [SR, GSI 18.02.2003]
- Double_t oldX=0., oldY=0., oldZ=0.;
- if (t->IsStartedTimeIntegral() && step==1) {
- t->GetGlobalXYZat(t->GetX(),oldX,oldY,oldZ);
- }
- //
-
- Double_t x,y,z;
- if (!t->GetGlobalXYZat(r,x,y,z)) {
- return kFALSE;
- }
- Double_t phi=TMath::ATan2(y,x);
- Int_t idet=layer.FindDetectorIndex(phi,z);
- if (idet<0) {
- return kFALSE;
- }
- const AliITSdetector &det=layer.GetDetector(idet);
- phi=det.GetPhi();
- if (!t->Propagate(phi,det.GetR())) {
- return kFALSE;
- }
- t->SetDetectorIndex(idet);
-
- const AliITSRecPoint *cl=0;
- Double_t maxchi2=1000.*kMaxChi2;
-
- Int_t idx=index[i];
- if (idx>0) {
- const AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(idx);
- if (c){
- if (idet != c->GetDetectorIndex()) {
- idet=c->GetDetectorIndex();
- const AliITSdetector &det=layer.GetDetector(idet);
- if (!t->Propagate(det.GetPhi(),det.GetR())) {
- return kFALSE;
- }
- t->SetDetectorIndex(idet);
- }
- //Double_t chi2=t->GetPredictedChi2(c);
- Int_t layer = (idx & 0xf0000000) >> 28;;
- Double_t chi2=GetPredictedChi2MI(t,c,layer);
- if (chi2<maxchi2) {
- cl=c;
- maxchi2=chi2;
- } else {
- return kFALSE;
- }
- }
- }
-
- if (cl) {
- //if (!t->Update(cl,maxchi2,idx)) {
- if (!UpdateMI(t,cl,maxchi2,idx)) {
- return kFALSE;
- }
- t->SetSampledEdx(cl->GetQ(),t->GetNumberOfClusters()-1);
- }
-
- {
- Double_t x0;
- Double_t d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
- t->CorrectForMaterial(-step*d,x0);
- }
-
- if (extra) { //search for extra clusters
- AliITStrackV2 tmp(*t);
- Double_t dz=4*TMath::Sqrt(tmp.GetSigmaZ2()+kSigmaZ2[i]);
- if (dz < 0.5*TMath::Abs(tmp.GetTgl())) dz=0.5*TMath::Abs(tmp.GetTgl());
- Double_t dy=4*TMath::Sqrt(t->GetSigmaY2()+kSigmaY2[i]);
- if (dy < 0.5*TMath::Abs(tmp.GetSnp())) dy=0.5*TMath::Abs(tmp.GetSnp());
- Double_t zmin=t->GetZ() - dz;
- Double_t zmax=t->GetZ() + dz;
- Double_t ymin=t->GetY() + phi*r - dy;
- Double_t ymax=t->GetY() + phi*r + dy;
- layer.SelectClusters(zmin,zmax,ymin,ymax);
-
- const AliITSRecPoint *c=0; Int_t ci=-1,cci=-1;
- Double_t maxchi2=1000.*kMaxChi2, tolerance=0.1;
- while ((c=layer.GetNextCluster(ci))!=0) {
- if (idet == c->GetDetectorIndex()) continue;
-
- const AliITSdetector &det=layer.GetDetector(c->GetDetectorIndex());
-
- if (!tmp.Propagate(det.GetPhi(),det.GetR())) continue;
-
- if (TMath::Abs(tmp.GetZ() - c->GetZ()) > tolerance) continue;
- if (TMath::Abs(tmp.GetY() - c->GetY()) > tolerance) continue;
-
- Double_t chi2=tmp.GetPredictedChi2(c);
- if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
- }
- if (cci>=0) t->SetExtraCluster(i,(i<<28)+cci);
- }
-
- // track time update [SR, GSI 17.02.2003]
- if (t->IsStartedTimeIntegral() && step==1) {
- Double_t newX, newY, newZ;
- t->GetGlobalXYZat(t->GetX(),newX,newY,newZ);
- Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
- (oldZ-newZ)*(oldZ-newZ);
- t->AddTimeStep(TMath::Sqrt(dL2));
- }
- //
-
- }
-
- if (!t->PropagateTo(xx,0.,0.)) return kFALSE;
- return kTRUE;
+ return RefitAt(xx,track,index,extra,planeeff); // call the method below
}
-
-Bool_t
-AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *t,const Int_t *clindex) {
+//------------------------------------------------------------------------
+Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
+ const Int_t *clusters,Bool_t extra, Bool_t planeeff)
+{
//--------------------------------------------------------------------
- // This function refits the track "t" at the position "x" using
+ // This function refits the track "track" at the position "x" using
// the clusters from array
+ // If "extra"==kTRUE,
+ // the clusters from overlapped modules get attached to "track"
+ // If "planeff"==kTRUE,
+ // special approach for plane efficiency evaluation is applyed
//--------------------------------------------------------------------
- Int_t index[kMaxLayer];
+ Int_t index[AliITSgeomTGeo::kNLayers];
Int_t k;
- for (k=0; k<kMaxLayer; k++) index[k]=-1;
+ for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
//
- for (k=0; k<kMaxLayer; k++) {
- index[k]=clindex[k];
+ for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
+ index[k]=clusters[k];
+ }
+
+ // special for cosmics: check which the innermost layer crossed
+ // by the track
+ Int_t innermostlayer=5;
+ Double_t drphi = TMath::Abs(track->GetD(0.,0.));
+ for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
+ if(drphi < fgLayers[innermostlayer].GetR()) break;
}
+ //printf(" drphi %f innermost %d\n",drphi,innermostlayer);
+ Int_t modstatus=1; // found
+ Float_t xloc,zloc;
Int_t from, to, step;
- if (xx > t->GetX()) {
- from=0; to=kMaxLayer;
+ if (xx > track->GetX()) {
+ from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
step=+1;
} else {
- from=kMaxLayer-1; to=-1;
+ from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
step=-1;
}
+ TString dir = (step>0 ? "outward" : "inward");
- for (Int_t i=from; i != to; i += step) {
- AliITSlayer &layer=fgLayers[i];
+ for (Int_t ilayer = from; ilayer != to; ilayer += step) {
+ AliITSlayer &layer=fgLayers[ilayer];
Double_t r=layer.GetR();
- if (step<0 && xx>r) break; //
- {
- Double_t hI=i-0.5*step;
- if (TMath::Abs(hI-1.5)<0.01 || TMath::Abs(hI-3.5)<0.01) {
- Double_t rs=0.5*(fgLayers[i-step].GetR() + r);
- Double_t d=0.0034, x0=38.6;
- if (TMath::Abs(hI-1.5)<0.01) {rs=9.; d=0.0097; x0=42;}
- if (!t->PropagateTo(rs,-step*d,x0)) {
- return kFALSE;
- }
- }
- }
+ if (step<0 && xx>r) break;
+
+ // material between SSD and SDD, SDD and SPD
+ Double_t hI=ilayer-0.5*step;
+ if (TMath::Abs(hI-3.5)<0.01) // SDDouter
+ if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
+ if (TMath::Abs(hI-1.5)<0.01) // SPDouter
+ if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
// remember old position [SR, GSI 18.02.2003]
Double_t oldX=0., oldY=0., oldZ=0.;
- if (t->IsStartedTimeIntegral() && step==1) {
- t->GetGlobalXYZat(t->GetX(),oldX,oldY,oldZ);
+ if (track->IsStartedTimeIntegral() && step==1) {
+ track->GetGlobalXYZat(track->GetX(),oldX,oldY,oldZ);
}
//
- Double_t x,y,z;
- if (!t->GetGlobalXYZat(r,x,y,z)) {
- return kFALSE;
- }
- Double_t phi=TMath::ATan2(y,x);
+ Double_t oldGlobXYZ[3];
+ track->GetXYZ(oldGlobXYZ);
+
+ Double_t phi,z;
+ if (!track->GetPhiZat(r,phi,z)) return kFALSE;
+
Int_t idet=layer.FindDetectorIndex(phi,z);
- if (idet<0) {
- return kFALSE;
+
+ // check if we allow a prolongation without point for large-eta tracks
+ Int_t skip = CheckSkipLayer(track,ilayer,idet);
+ if (skip==2) {
+ // propagate to the layer radius
+ Double_t xToGo; track->GetLocalXat(r,xToGo);
+ track->AliExternalTrackParam::PropagateTo(xToGo,GetBz());
+ // apply correction for material of the current layer
+ CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
+ modstatus = 4; // out in z
+ LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
+ track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
+ // track time update [SR, GSI 17.02.2003]
+ if (track->IsStartedTimeIntegral() && step==1) {
+ Double_t newX, newY, newZ;
+ track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
+ Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
+ (oldZ-newZ)*(oldZ-newZ);
+ track->AddTimeStep(TMath::Sqrt(dL2));
+ }
+ continue;
}
+
+ if (idet<0) return kFALSE;
+
const AliITSdetector &det=layer.GetDetector(idet);
phi=det.GetPhi();
- if (!t->Propagate(phi,det.GetR())) {
- return kFALSE;
- }
- t->SetDetectorIndex(idet);
-
- const AliITSRecPoint *cl=0;
- Double_t maxchi2=1000.*kMaxChi2;
-
- Int_t idx=index[i];
- if (idx>0) {
- const AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(idx);
- if (c){
- if (idet != c->GetDetectorIndex()) {
- idet=c->GetDetectorIndex();
- const AliITSdetector &det=layer.GetDetector(idet);
- if (!t->Propagate(det.GetPhi(),det.GetR())) {
- return kFALSE;
- }
- t->SetDetectorIndex(idet);
- }
- //Double_t chi2=t->GetPredictedChi2(c);
- Int_t layer = (idx & 0xf0000000) >> 28;;
- Double_t chi2=GetPredictedChi2MI(t,c,layer);
- if (chi2<maxchi2) {
- cl=c;
- maxchi2=chi2;
- } else {
- return kFALSE;
- }
- }
- }
- /*
- if (cl==0)
- if (t->GetNumberOfClusters()>2) {
- Double_t dz=4*TMath::Sqrt(t->GetSigmaZ2()+kSigmaZ2[i]);
- Double_t dy=4*TMath::Sqrt(t->GetSigmaY2()+kSigmaY2[i]);
- Double_t zmin=t->GetZ() - dz;
- Double_t zmax=t->GetZ() + dz;
- Double_t ymin=t->GetY() + phi*r - dy;
- Double_t ymax=t->GetY() + phi*r + dy;
- layer.SelectClusters(zmin,zmax,ymin,ymax);
-
- const AliITSRecPoint *c=0; Int_t ci=-1;
- while ((c=layer.GetNextCluster(ci))!=0) {
- if (idet != c->GetDetectorIndex()) continue;
- Double_t chi2=t->GetPredictedChi2(c);
- if (chi2<maxchi2) { cl=c; maxchi2=chi2; idx=ci; }
- }
- }
- */
- if (cl) {
- //if (!t->Update(cl,maxchi2,idx)) {
- if (!UpdateMI(t,cl,maxchi2,idx)) {
- return kFALSE;
+ if (!track->Propagate(phi,det.GetR())) return kFALSE;
+ track->SetDetectorIndex(idet);
+ LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
+
+ Double_t dz,zmin,zmax;
+
+ const AliITSRecPoint *clAcc=0;
+ Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
+
+ Int_t idx=index[ilayer];
+ if (idx>=0) { // cluster in this layer
+ modstatus = 6; // no refit
+ const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
+ if (cl) {
+ if (idet != cl->GetDetectorIndex()) {
+ idet=cl->GetDetectorIndex();
+ const AliITSdetector &det=layer.GetDetector(idet);
+ if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
+ track->SetDetectorIndex(idet);
+ LocalModuleCoord(ilayer,idet,track,xloc,zloc); // local module coords
+ }
+ //Double_t chi2=track->GetPredictedChi2(cl);
+ Int_t cllayer = (idx & 0xf0000000) >> 28;;
+ Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
+ if (chi2<maxchi2) {
+ clAcc=cl;
+ maxchi2=chi2;
+ modstatus = 1; // found
+ } else {
+ return kFALSE; //
+ }
+ }
+ } else { // no cluster in this layer
+ if (skip==1) {
+ modstatus = 3; // skipped
+ // Plane Eff determination:
+ if (planeeff && AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) {
+ if (IsOKForPlaneEff(track,ilayer)) // only adequate track for plane eff. evaluation
+ UseTrackForPlaneEff(track,ilayer);
+ }
+ } else {
+ modstatus = 5; // no cls in road
+ // check dead
+ dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
+ TMath::Sqrt(track->GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
+ zmin=track->GetZ() - dz;
+ zmax=track->GetZ() + dz;
+ Int_t dead = CheckDeadZone(ilayer,idet,zmin,zmax);
+ if (dead==1) modstatus = 7; // holes in z in SPD
+ if (dead==2) modstatus = 2; // dead from OCDB
}
- t->SetSampledEdx(cl->GetQ(),t->GetNumberOfClusters()-1);
}
-
- {
- Double_t x0;
- Double_t d=layer.GetThickness(t->GetY(),t->GetZ(),x0);
- t->CorrectForMaterial(-step*d,x0);
+
+ if (clAcc) {
+ if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
+ track->SetSampledEdx(clAcc->GetQ(),track->GetNumberOfClusters()-1);
}
+ track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
+
+
+ if (extra) { // search for extra clusters in overlapped modules
+ AliITStrackV2 tmp(*track);
+ Double_t dy,ymin,ymax;
+ dz=4*TMath::Sqrt(tmp.GetSigmaZ2()+AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
+ if (dz < 0.5*TMath::Abs(tmp.GetTgl())) dz=0.5*TMath::Abs(tmp.GetTgl());
+ dy=4*TMath::Sqrt(track->GetSigmaY2()+AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
+ if (dy < 0.5*TMath::Abs(tmp.GetSnp())) dy=0.5*TMath::Abs(tmp.GetSnp());
+ zmin=track->GetZ() - dz;
+ zmax=track->GetZ() + dz;
+ ymin=track->GetY() + phi*r - dy;
+ ymax=track->GetY() + phi*r + dy;
+ layer.SelectClusters(zmin,zmax,ymin,ymax);
+
+ const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
+ Int_t idetExtra=-1;
+ Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2(), tolerance=0.1;
+ while ((clExtra=layer.GetNextCluster(ci))!=0) {
+ // only clusters in another module! (overlaps)
+ idetExtra = clExtra->GetDetectorIndex();
+ if (idet == idetExtra) continue;
+
+ const AliITSdetector &det=layer.GetDetector(idetExtra);
+
+ if (!tmp.Propagate(det.GetPhi(),det.GetR())) continue;
+
+ if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
+ if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
+
+ Double_t chi2=tmp.GetPredictedChi2(clExtra);
+ if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
+ }
+ if (cci>=0) {
+ track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
+ track->SetExtraModule(ilayer,idetExtra);
+ }
+ } // end search for extra clusters in overlapped modules
+
+ // Correct for material of the current layer
+ if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
// track time update [SR, GSI 17.02.2003]
- if (t->IsStartedTimeIntegral() && step==1) {
+ if (track->IsStartedTimeIntegral() && step==1) {
Double_t newX, newY, newZ;
- t->GetGlobalXYZat(t->GetX(),newX,newY,newZ);
+ track->GetGlobalXYZat(track->GetX(),newX,newY,newZ);
Double_t dL2 = (oldX-newX)*(oldX-newX) + (oldY-newY)*(oldY-newY) +
(oldZ-newZ)*(oldZ-newZ);
- t->AddTimeStep(TMath::Sqrt(dL2));
+ track->AddTimeStep(TMath::Sqrt(dL2));
}
//
- }
+ } // end loop on layers
+
+ if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
- if (!t->PropagateTo(xx,0.,0.)) return kFALSE;
return kTRUE;
}
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
{
//
cerry*=cerry;
cerrz*=cerrz;
Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
- if (i>1){
+ if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
if (ratio<0.5) {
cchi2+=(0.5-ratio)*10.;
//
Double_t match = TMath::Sqrt(track->GetChi22());
if (track->GetConstrain()) match/=track->GetNumberOfClusters();
- if (!track->GetConstrain()) match/=track->GetNumberOfClusters()-2.;
+ if (!track->GetConstrain()) {
+ if (track->GetNumberOfClusters()>2) {
+ match/=track->GetNumberOfClusters()-2.;
+ } else {
+ match=0;
+ }
+ }
if (match<0) match=0;
Float_t deadzonefactor = (track->GetNDeadZone()>0) ? 3*(1.1-track->GetDeadZoneProbability()):0.;
Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
return normchi2;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2)
{
//
vec(1,0)=track1->GetZ() - track3.GetZ();
vec(2,0)=track1->GetSnp() - track3.GetSnp();
vec(3,0)=track1->GetTgl() - track3.GetTgl();
- vec(4,0)=track1->Get1Pt() - track3.Get1Pt();
+ vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
//
TMatrixD cov(5,5);
cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
return chi2(0,0);
}
-
-Double_t AliITStrackerMI::GetDeadZoneProbability(Double_t zpos, Double_t zerr)
+//------------------------------------------------------------------------
+Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr)
{
//
- // return probability that given point - characterized by z position and error is in dead zone
+ // return probability that given point (characterized by z position and error)
+ // is in SPD dead zone
//
- Double_t probability =0;
+ Double_t probability = 0.;
Double_t absz = TMath::Abs(zpos);
- Double_t nearestz = (absz<2)? 0.:7.1;
- if (TMath::Abs(absz-nearestz)>0.25+3*zerr) return 0;
- Double_t zmin=0, zmax=0;
- if (zpos<-6.){
- zmin = -7.25; zmax = -6.95;
- }
- if (zpos>6){
- zmin = 7.0; zmax =7.3;
- }
- if (absz<2){
- zmin = -0.75; zmax = 1.5;
+ Double_t nearestz = (absz<2.) ? 0.5*(fSPDdetzcentre[1]+fSPDdetzcentre[2]) :
+ 0.5*(fSPDdetzcentre[2]+fSPDdetzcentre[3]);
+ if (TMath::Abs(absz-nearestz)>0.25+3.*zerr) return probability;
+ Double_t zmin, zmax;
+ if (zpos<-6.) { // dead zone at z = -7
+ zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
+ zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
+ } else if (zpos>6.) { // dead zone at z = +7
+ zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
+ zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
+ } else if (absz<2.) { // dead zone at z = 0
+ zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
+ zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
+ } else {
+ zmin = 0.;
+ zmax = 0.;
}
- probability = (TMath::Erf((zpos-zmin)/zerr) - TMath::Erf((zpos-zmax)/zerr))*0.5;
+ // probability that the true z is in the range [zmin,zmax] (i.e. inside
+ // dead zone)
+ probability = 0.5*( TMath::Erf((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
+ TMath::Erf((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
return probability;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetTruncatedChi2(AliITStrackMI * track, Float_t fac)
{
//
Double_t normchi2 = sumchi/sumweight;
return normchi2;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack)
{
//
npoints++;
}
if (npoints>1) return
- TMath::Max(TMath::Abs(0.3*forwardtrack->Get1Pt())-0.5,0.)+
+ TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
//2*forwardtrack->fNUsed+
res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
1./(1.+forwardtrack->GetNSkipped()));
return 1000;
}
-
-
-
-
-
+//------------------------------------------------------------------------
Float_t *AliITStrackerMI::GetWeight(Int_t index) {
//--------------------------------------------------------------------
// Return pointer to a given cluster
Int_t c=(index & 0x0fffffff) >> 00;
return fgLayers[l].GetWeight(c);
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::RegisterClusterTracks(AliITStrackMI* track,Int_t id)
{
//---------------------------------------------
}
}
}
+//------------------------------------------------------------------------
void AliITStrackerMI::UnRegisterClusterTracks(AliITStrackMI* track, Int_t id)
{
//---------------------------------------------
}
}
}
+//------------------------------------------------------------------------
Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
{
//-------------------------------------------------------------
//
Float_t deltan = 0;
if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
- if (l>2&&track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
+ if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
+ if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
if (l<2 || l>3){
deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
}
track->SetNUsed(shared);
return shared;
}
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
{
//
//
Float_t deltan = 0;
if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
- if (l>2&&track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
+ if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
+ if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
if (l<2 || l>3){
deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
}
}
return sharedtrack;
}
-
-
+//------------------------------------------------------------------------
AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1){
//
// try to find track hypothesys without conflicts
//
AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
- if (TMath::Abs(1./track10->Get1Pt())>0.5+TMath::Abs(1/track20->Get1Pt())) return track10;
+ if (track10->Pt()>0.5+track20->Pt()) return track10;
for (Int_t itrack=0;itrack<entries1;itrack++){
AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
//
w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
+s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
- +1.*TMath::Abs(1./track10->Get1Pt())/(TMath::Abs(1./track10->Get1Pt())+TMath::Abs(1./track20->Get1Pt()))
+ +1.*track10->Pt()/(track10->Pt()+track20->Pt())
);
w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
- +1.*TMath::Abs(1./track20->Get1Pt())/(TMath::Abs(1./track10->Get1Pt())+TMath::Abs(1./track20->Get1Pt()))
+ +1.*track20->Pt()/(track10->Pt()+track20->Pt())
);
Double_t sumw = w1+w2;
UnRegisterClusterTracks(track,trackID2);
}
- if (track10->GetConstrain()&&track10->GetChi2MIP(0)<kMaxChi2PerCluster[0]&&track10->GetChi2MIP(1)<kMaxChi2PerCluster[1]
- &&track10->GetChi2MIP(2)<kMaxChi2PerCluster[2]&&track10->GetChi2MIP(3)<kMaxChi2PerCluster[3]){
- // if (track10->fChi2MIP[0]<kMaxChi2PerCluster[0]&&track10->fChi2MIP[1]<kMaxChi2PerCluster[1]
- // &&track10->fChi2MIP[2]<kMaxChi2PerCluster[2]&&track10->fChi2MIP[3]<kMaxChi2PerCluster[3]){
+ if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
+ // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
RegisterClusterTracks(track10,trackID1);
}
- if (track20->GetConstrain()&&track20->GetChi2MIP(0)<kMaxChi2PerCluster[0]&&track20->GetChi2MIP(1)<kMaxChi2PerCluster[1]
- &&track20->GetChi2MIP(2)<kMaxChi2PerCluster[2]&&track20->GetChi2MIP(3)<kMaxChi2PerCluster[3]){
- //if (track20->fChi2MIP[0]<kMaxChi2PerCluster[0]&&track20->fChi2MIP[1]<kMaxChi2PerCluster[1]
- // &&track20->fChi2MIP[2]<kMaxChi2PerCluster[2]&&track20->fChi2MIP[3]<kMaxChi2PerCluster[3]){
+ if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
+ //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
RegisterClusterTracks(track20,trackID2);
}
return track10;
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
//--------------------------------------------------------------------
// This function marks clusters assigned to the track
if (c->GetSigmaZ2()>0.1) c->Use();
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
{
//------------------------------------------------------------------
// add track to the list of hypothesys
//------------------------------------------------------------------
- if (esdindex>=fTrackHypothesys.GetEntriesFast()) fTrackHypothesys.Expand(esdindex*2+10);
+ if (esdindex>=fTrackHypothesys.GetEntriesFast())
+ fTrackHypothesys.Expand(TMath::Max(fTrackHypothesys.GetSize(),esdindex*2+10));
//
TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
if (!array) {
}
array->AddLast(track);
}
-
+//------------------------------------------------------------------------
void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
{
//-------------------------------------------------------------------
track->SetFakeRatio(1.);
CookLabel(track,0.); //For comparison only
//
- //if (chi2<kMaxChi2PerCluster[0]&&track->fFakeRatio==0){
- if (chi2<kMaxChi2PerCluster[0]){
+ //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
+ if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
if (track->GetNumberOfClusters()<maxn) continue;
maxn = track->GetNumberOfClusters();
if (chi2<minchi2){
AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
if (track){
track->SetChi2MIP(0,GetNormalizedChi2(track, mode));
- if (track->GetChi2MIP(0)<kMaxChi2PerCluster[0])
+ if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
chi2[itrack] = track->GetChi2MIP(0);
else{
if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
//
TMath::Sort(entries,chi2,index,kFALSE);
besttrack = (AliITStrackMI*)array->At(index[0]);
- if (besttrack&&besttrack->GetChi2MIP(0)<kMaxChi2PerCluster[0]){
+ if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
for (Int_t i=0;i<6;i++){
if (besttrack->GetClIndex(i)>0){
erry[i] = besttrack->GetSigmaY(i); erry[i+6] = besttrack->GetSigmaY(i+6);
AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
if (track){
track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
- if (track->GetChi2MIP(0)<kMaxChi2PerCluster[0])
+ if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0))
chi2[itrack] = track->GetChi2MIP(0)-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
else
{
}
}
besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
- Float_t minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(kMaxChi2PerCluster[0]));
+ Float_t minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
Float_t minn = besttrack->GetNumberOfClusters()-3;
Int_t accepted=0;
for (Int_t i=0;i<entries;i++){
delete [] chi2;
delete [] index;
}
-
-
-
+//------------------------------------------------------------------------
AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
{
//-------------------------------------------------------------
//
AliITStrackMI * backtrack = new AliITStrackMI(*original);
AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
- Double_t xyzv[]={GetX(),GetY(),GetZ()};
- Double_t ersv[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
+ Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
+ Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
//
for (Int_t i=0;i<entries;i++){
AliITStrackMI * track = (AliITStrackMI*)array->At(i);
//
// backtrack
backtrack = new(backtrack) AliITStrackMI(*track);
- if (track->GetConstrain()){
- if (!backtrack->PropagateTo(3.,0.0028,65.19)) continue;
- if (!backtrack->Improve(0,xyzv,ersv)) continue;
- //if (!backtrack->PropagateTo(2.,0.0028,0)) continue; // This
- //if (!backtrack->Improve(0,xyzv,ersv)) continue; // is
- //if (!backtrack->PropagateTo(1.,0.0028,0)) continue; // an over-kill
- //if (!backtrack->Improve(0,xyzv,ersv)) continue; // (I.B.)
- //if (!backtrack->PropagateToVertex()) continue; //
+ if (track->GetConstrain()) {
+ if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
+ if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;
backtrack->ResetCovariance(10.);
- //if (!backtrack->Improve(0,xyzv,ersv)) continue;
}else{
backtrack->ResetCovariance(10.);
}
//
track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
//for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
- if (track->GetChi2MIP(1)>kMaxChi2PerCluster[1]*6.) continue;
+ if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
track->SetChi22(GetMatchingChi2(backtrack,original));
if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
- if (!(track->GetConstrain())&&track->GetChi2MIP(1)>kMaxChi2PerCluster[1]) continue;
- Bool_t isOK=kTRUE;
- if(!isOK) continue;
+ if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
//
//forward track - without constraint
forwardtrack = new(forwardtrack) AliITStrackMI(*original);
x = track->GetX();
RefitAt(x,forwardtrack,track);
track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
- if (track->GetChi2MIP(2)>kMaxChi2PerCluster[2]*6.0) continue;
- if (!(track->GetConstrain())&&track->GetChi2MIP(2)>kMaxChi2PerCluster[2]) continue;
+ if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
+ if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
//track->fD[0] = forwardtrack->GetD(GetX(),GetY());
//track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
}
track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
- if ( (track->GetChi2MIP(3)>6.*kMaxChi2PerCluster[3])) continue;
- if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*kMaxChi2PerCluster[3])) {
+ if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
+ if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
track->SetChi2MIP(3,1000);
continue;
}
delete forwardtrack;
Int_t accepted=0;
for (Int_t i=0;i<entries;i++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(i);
+ AliITStrackMI * track = (AliITStrackMI*)array->At(i);
+
if (!track) continue;
- if (accepted>checkmax || track->GetChi2MIP(3)>kMaxChi2PerCluster[3]*6. ||
+ if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
(track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)||
track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.){
if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
//
array->Compress();
SortTrackHypothesys(esdindex,checkmax,1);
+
array = (TObjArray*) fTrackHypothesys.At(esdindex);
if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
besttrack = (AliITStrackMI*)array->At(0);
AliITStrackMI *longtrack =0;
minchi2 =1000;
Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
- for (Int_t itrack=entries-1;itrack>0;itrack--){
+ for (Int_t itrack=entries-1;itrack>0;itrack--) {
AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
if (!track->GetConstrain()) continue;
if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
Int_t list[6];
AliITSRecPoint * clist[6];
Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
- if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<kMaxChi2PerCluster[0]&&besttrack->GetChi2MIP(1)<kMaxChi2PerCluster[1]
- &&besttrack->GetChi2MIP(2)<kMaxChi2PerCluster[2]&&besttrack->GetChi2MIP(3)<kMaxChi2PerCluster[3]){
+ if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
+ &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
RegisterClusterTracks(besttrack,esdindex);
}
//
if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
if ( c->GetNz()> nz[i]+0.7) continue; //shared track
- if ( ilayer>2&& besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
+ if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
+ if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
//if ( c->GetNy()> ny[i]+0.7) continue; //shared track
Bool_t cansign = kTRUE;
}
return besttrack;
}
-
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
{
//
if (!longtrack) {longtrack = besttrack;}
else besttrack= longtrack;
//
- if (besttrack){
+ if (besttrack) {
Int_t list[6];
AliITSRecPoint * clist[6];
Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
track->SetNUsed(shared);
track->SetNSkipped(besttrack->GetNSkipped());
track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
- if (shared>0){
+ if (shared>0) {
+ if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
Int_t nshared;
Int_t overlist[6];
//
Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
//if (sharedtrack==-1) sharedtrack=0;
- if (sharedtrack>=0){
+ if (sharedtrack>=0) {
besttrack = GetBest2Tracks(i,sharedtrack,10,5.5);
}
}
- if (besttrack&&fAfterV0){
+ if (besttrack&&fAfterV0) {
UpdateESDtrack(besttrack,AliESDtrack::kITSin);
}
if (besttrack&&fConstraint[fPass])
UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- //if (besttrack&&besttrack->fConstrain)
- // UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5){
- if ( (TMath::Abs(besttrack->GetD(0))>0.1) && fConstraint[fPass]) {
- track->SetReconstructed(kFALSE);
- }
- if ( (TMath::Abs(besttrack->GetD(1))>0.1) && fConstraint[fPass]){
- track->SetReconstructed(kFALSE);
- }
+ if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
+ if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
+ TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
}
}
}
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
//--------------------------------------------------------------------
//This function "cooks" a track label. If label<0, this track is fake.
track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
nwrong+=isWrong;
}
- track->SetFakeRatio(double(nwrong)/double(track->GetNumberOfClusters()));
+ Int_t nclusters = track->GetNumberOfClusters();
+ if (nclusters > 0) //PH Some tracks don't have any cluster
+ track->SetFakeRatio(double(nwrong)/double(nclusters));
if (tpcLabel>0){
if (track->GetFakeRatio()>wrong) track->SetLabel(-tpcLabel);
else
}
}
-
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::CookdEdx(AliITStrackMI* track)
{
//
}
track->SetdEdx(sumamp/sumweight);
}
-
-
-void AliITStrackerMI::MakeCoeficients(Int_t ntracks){
+//------------------------------------------------------------------------
+void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
//
//
- if (fCoeficients) delete []fCoeficients;
- fCoeficients = new Float_t[ntracks*48];
- for (Int_t i=0;i<ntracks*48;i++) fCoeficients[i]=-1.;
+ if (fCoefficients) delete []fCoefficients;
+ fCoefficients = new Float_t[ntracks*48];
+ for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
}
-
-
+//------------------------------------------------------------------------
Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
{
//
Float_t theta = track->GetTgl();
Float_t phi = track->GetSnp();
phi = TMath::Sqrt(phi*phi/(1.-phi*phi));
- GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz);
+ AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz);
Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz);
Float_t ny,nz;
- GetNTeor(layer,cluster, theta,phi,ny,nz);
+ AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
if (delta>1){
chi2+=0.5*TMath::Min(delta/2,2.);
return chi2;
}
-
-Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
{
//
//
//
Int_t layer = (index & 0xf0000000) >> 28;
track->SetClIndex(layer, index);
- if ( (layer>1) &&track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
- chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
- track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
- }
- return track->UpdateMI(cl->GetY(),cl->GetZ(),track->GetSigmaY(layer),track->GetSigmaZ(layer),chi2,index);
-}
-
-void AliITStrackerMI::GetNTeor(Int_t layer, const AliITSRecPoint* /*cl*/, Float_t theta, Float_t phi, Float_t &ny, Float_t &nz)
-{
- //
- //get "mean shape"
- //
- if (layer==0){
- ny = 1.+TMath::Abs(phi)*3.2;
- nz = 1.+TMath::Abs(theta)*0.34;
- return;
- }
- if (layer==1){
- ny = 1.+TMath::Abs(phi)*3.2;
- nz = 1.+TMath::Abs(theta)*0.28;
- return;
- }
-
- if (layer>3){
- ny = 2.02+TMath::Abs(phi)*1.95;
- nz = 2.02+TMath::Abs(phi)*2.35;
- return;
+ if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
+ if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
+ chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
+ track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
+ }
}
- ny = 6.6-2.7*TMath::Abs(phi);
- nz = 2.8-3.11*TMath::Abs(phi)+0.45*TMath::Abs(theta);
-}
+ if (cl->GetQ()<=0) return 0; // ingore the "virtual" clusters
+ // Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);//printf("gtr %f %f %f\n",trxyz[0],trxyz[1],trxyz[2]);printf("gcl %f %f %f\n",clxyz[0],clxyz[1],clxyz[2]);
-Int_t AliITStrackerMI::GetError(Int_t layer, const AliITSRecPoint*cl, Float_t theta, Float_t phi,Float_t expQ, Float_t &erry, Float_t &errz)
-{
- //calculate cluster position error
- //
- Float_t nz,ny;
- GetNTeor(layer, cl,theta,phi,ny,nz);
- erry = TMath::Sqrt(cl->GetSigmaY2());
- errz = TMath::Sqrt(cl->GetSigmaZ2());
- //
- // PIXELS
- if (layer<2){
-
- if (TMath::Abs(ny-cl->GetNy())>0.6) {
- if (ny<cl->GetNy()){
- erry*=0.4+TMath::Abs(ny-cl->GetNy());
- errz*=0.4+TMath::Abs(ny-cl->GetNy());
- }else{
- erry*=0.7+0.5*TMath::Abs(ny-cl->GetNy());
- errz*=0.7+0.5*TMath::Abs(ny-cl->GetNy());
- }
- }
- if (TMath::Abs(nz-cl->GetNz())>1.) {
- erry*=TMath::Abs(nz-cl->GetNz());
- errz*=TMath::Abs(nz-cl->GetNz());
- }
- erry*=0.85;
- errz*=0.85;
- erry= TMath::Min(erry,float(0.005));
- errz= TMath::Min(errz,float(0.03));
- return 10;
- }
-//STRIPS
- if (layer>3){
- //factor 1.8 appears in new simulation
- //
- Float_t scale=1.8;
- if (cl->GetNy()==100||cl->GetNz()==100){
- erry = 0.004*scale;
- errz = 0.2*scale;
- return 100;
- }
- if (cl->GetNy()+cl->GetNz()>12){
- erry = 0.06*scale;
- errz = 0.57*scale;
- return 100;
- }
- Float_t normq = cl->GetQ()/(TMath::Sqrt(1+theta*theta+phi*phi));
- Float_t chargematch = TMath::Max(double(normq/expQ),2.);
- //
- if (cl->GetType()==1 || cl->GetType()==10 ){
- if (chargematch<1.0 || (cl->GetNy()+cl->GetNz()<nz+ny+0.5)){
- errz = 0.043*scale;
- erry = 0.00094*scale;
- return 101;
- }
- if (cl->GetNy()+cl->GetNz()<nz+ny+1.2){
- errz = 0.06*scale;
- erry =0.0013*scale;
- return 102;
- }
- erry = 0.0027*scale;
- errz = TMath::Min(0.028*(chargematch+cl->GetNy()+cl->GetNz()-nz+ny),0.15)*scale;
- return 103;
- }
- if (cl->GetType()==2 || cl->GetType()==11 ){
- erry = TMath::Min(0.0010*(1+chargematch+cl->GetNy()+cl->GetNz()-nz+ny),0.05)*scale;
- errz = TMath::Min(0.025*(1+chargematch+cl->GetNy()+cl->GetNz()-nz+ny),0.5)*scale;
- return 104;
- }
-
- if (cl->GetType()>100 ){
- if ((chargematch+cl->GetNy()+cl->GetNz()-nz-ny<1.5)){
- errz = 0.05*scale;
- erry = 0.00096*scale;
- return 105;
- }
- if (cl->GetNy()+cl->GetNz()-nz-ny<1){
- errz = 0.10*scale;
- erry = 0.0025*scale;
- return 106;
- }
+ // Take into account the mis-alignment
+ Double_t x=track->GetX()+cl->GetX();
+ if (!track->PropagateTo(x,0.,0.)) return 0;
- errz = TMath::Min(0.05*(chargematch+cl->GetNy()+cl->GetNz()-nz-ny),0.4)*scale;
- erry = TMath::Min(0.003*(chargematch+cl->GetNy()+cl->GetNz()-nz-ny),0.05)*scale;
- return 107;
- }
- Float_t diff = cl->GetNy()+cl->GetNz()-ny-nz;
- if (diff<1) diff=1;
- if (diff>4) diff=4;
-
- if (cl->GetType()==5||cl->GetType()==6||cl->GetType()==7||cl->GetType()==8){
- errz = 0.14*diff;
- erry = 0.003*diff;
- return 108;
- }
- erry = 0.04*diff;
- errz = 0.06*diff;
- return 109;
- }
- //DRIFTS
- Float_t normq = cl->GetQ()/(TMath::Sqrt(1+theta*theta+phi*phi));
- Float_t chargematch = normq/expQ;
- Float_t factorz=1;
- Int_t cnz = cl->GetNz()%10;
- //charge match
- if (cl->GetType()==1){
- if (chargematch<1.25){
- erry = 0.0028*(1.+6./cl->GetQ()); // gold clusters
- }
- else{
- erry = 0.003*chargematch;
- if (cl->GetNz()==3) erry*=1.5;
- }
- if (chargematch<1.0){
- errz = 0.0011*(1.+6./cl->GetQ());
- }
- else{
- errz = 0.002*(1+2*(chargematch-1.));
- }
- if (cnz>nz+0.6) {
- erry*=(cnz-nz+0.5);
- errz*=1.4*(cnz-nz+0.5);
- }
- }
- if (cl->GetType()>1){
- if (chargematch<1){
- erry = 0.00385*(1.+6./cl->GetQ()); // gold clusters
- errz = 0.0016*(1.+6./cl->GetQ());
- }
- else{
- errz = 0.0014*(1+3*(chargematch-1.));
- erry = 0.003*(1+3*(chargematch-1.));
- }
- if (cnz>nz+0.6) {
- erry*=(cnz-nz+0.5);
- errz*=1.4*(cnz-nz+0.5);
- }
- }
- if (TMath::Abs(cl->GetY())>2.5){
- factorz*=1+2*(TMath::Abs(cl->GetY())-2.5);
- }
- if (TMath::Abs(cl->GetY())<1){
- factorz*=1.+0.5*TMath::Abs(TMath::Abs(cl->GetY())-1.);
- }
- factorz= TMath::Min(factorz,float(4.));
- errz*=factorz;
+
+ AliCluster c(*cl);
+ c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
+ c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
- erry= TMath::Min(erry,float(0.05));
- errz= TMath::Min(errz,float(0.05));
- return 200;
+ return track->UpdateMI(&c,chi2,index);
}
-
-
-void AliITStrackerMI::GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
+//------------------------------------------------------------------------
+void AliITStrackerMI::GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
{
//
//DCA sigmas parameterization
//to be paramterized using external parameters in future
//
//
- sigmarfi = 0.004+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
- sigmaz = 0.011+4.37*TMath::Abs(track->GetC());
+ sigmarfi = 0.0040+1.4 *TMath::Abs(track->GetC())+332.*track->GetC()*track->GetC();
+ sigmaz = 0.0110+4.37*TMath::Abs(track->GetC());
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::SignDeltas( TObjArray *ClusterArray, Float_t vz)
{
//
}
}
}
-
-
+//------------------------------------------------------------------------
void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
{
//
printf("Problem\n");
}
}
-
-
-
+//------------------------------------------------------------------------
Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
//
- //Get nearest upper layer close to the point xr.
+ // Get nearest upper layer close to the point xr.
// rough approximation
//
const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
}
return res;
}
-
-
-void AliITStrackerMI::UpdateTPCV0(AliESD *event){
+//------------------------------------------------------------------------
+void AliITStrackerMI::UpdateTPCV0(AliESDEvent *event){
//
//try to update, or reject TPC V0s
//
}
//
}
-
-
-
-void AliITStrackerMI::FindV02(AliESD *event)
+//------------------------------------------------------------------------
+void AliITStrackerMI::FindV02(AliESDEvent *event)
{
//
// V0 finder
//
Float_t primvertex[3]={GetX(),GetY(),GetZ()};
//
- // make its - esd map
+ // make ITS - ESD map
//
for (Int_t itrack=0;itrack<ntracks+2;itrack++) {
itsmap[itrack] = -1;
itsmap[esdindex] = itrack;
}
//
- // create its tracks from esd tracks if not done before
+ // create ITS tracks from ESD tracks if not done before
//
for (Int_t itrack=0;itrack<ntracks;itrack++){
if (itsmap[itrack]>=0) continue;
if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){
// tracks which can reach inner part of ITS
// propagate track to outer its volume - with correction for material
- CorrectForDeadZoneMaterial(tpctrack);
+ CorrectForTPCtoITSDeadZoneMaterial(tpctrack);
}
itsmap[itrack] = nitstracks;
fOriginal.AddAt(tpctrack,nitstracks);
//
//
TObjArray * array0b = (TObjArray*)fBestHypothesys.At(itrack0);
- if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<1.1)
+ if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<1.1) {
+ fCurrentEsdTrack = itrack0;
FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack0),itrack0, kFALSE);
+ }
TObjArray * array1b = (TObjArray*)fBestHypothesys.At(itrack1);
- if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<1.1)
+ if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<1.1) {
+ fCurrentEsdTrack = itrack1;
FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack1),itrack1, kFALSE);
+ }
//
AliITStrackMI * track0b = (AliITStrackMI*)fOriginal.At(itrack0);
AliITStrackMI * track1b = (AliITStrackMI*)fOriginal.At(itrack1);
pvertex->SetNBefore(maxLayer);
}
if (pvertex->GetRr()<90){
- pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Float_t(1.));
- pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Float_t(1.));
+ pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
+ pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
}
if (pvertex->GetRr()<20){
pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;
Float_t sigmap = 0.5*sigmap0*(0.6+0.4*p12); // "resolution: of point angle - as a function of radius and momenta
Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);
- Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Float_t(0.7))*
- TMath::Min(pvertex->GetCausalityP()[3],Float_t(0.7)));
+ Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*
+ TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));
//
//Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);
Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();
//
// delete temporary arrays
//
+ delete[] forbidden;
delete[] minPointAngle;
delete[] maxr;
delete[] minr;
delete[] helixes;
delete pvertex;
}
-
-
-void AliITStrackerMI::RefitV02(AliESD *event)
+//------------------------------------------------------------------------
+void AliITStrackerMI::RefitV02(AliESDEvent *event)
{
//
//try to refit V0s in the third path of the reconstruction
continue;
}
if (v0mi->GetRr()>35){
- CorrectForDeadZoneMaterial(&tpc0);
- CorrectForDeadZoneMaterial(&tpc1);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
v0temp.SetParamN(tpc0);
v0temp.SetParamP(tpc1);
}
continue;
}
- CorrectForDeadZoneMaterial(&tpc0);
- CorrectForDeadZoneMaterial(&tpc1);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
+ CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
// if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
if (RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){
v0temp.SetParamN(tpc0);
}
}
}
+//------------------------------------------------------------------------
+void AliITStrackerMI::BuildMaterialLUT(TString material) {
+ //--------------------------------------------------------------------
+ // Fill a look-up table with mean material
+ //--------------------------------------------------------------------
+
+ Int_t n=1000;
+ Double_t mparam[7];
+ Double_t point1[3],point2[3];
+ Double_t phi,cosphi,sinphi,z;
+ // 0-5 layers, 6 pipe, 7-8 shields
+ Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 7.5,25.0};
+ Double_t rmax[9]={ 5.5, 7.3,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
+
+ Int_t ifirst=0,ilast=0;
+ if(material.Contains("Pipe")) {
+ ifirst=6; ilast=6;
+ } else if(material.Contains("Shields")) {
+ ifirst=7; ilast=8;
+ } else if(material.Contains("Layers")) {
+ ifirst=0; ilast=5;
+ } else {
+ Error("BuildMaterialLUT","Wrong layer name\n");
+ }
+
+ for(Int_t imat=ifirst; imat<=ilast; imat++) {
+ Double_t param[5]={0.,0.,0.,0.,0.};
+ for (Int_t i=0; i<n; i++) {
+ phi = 2.*TMath::Pi()*gRandom->Rndm();
+ cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
+ z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
+ point1[0] = rmin[imat]*cosphi;
+ point1[1] = rmin[imat]*sinphi;
+ point1[2] = z;
+ point2[0] = rmax[imat]*cosphi;
+ point2[1] = rmax[imat]*sinphi;
+ point2[2] = z;
+ AliTracker::MeanMaterialBudget(point1,point2,mparam);
+ for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
+ }
+ for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
+ if(imat<=5) {
+ fxOverX0Layer[imat] = param[1];
+ fxTimesRhoLayer[imat] = param[0]*param[4];
+ } else if(imat==6) {
+ fxOverX0Pipe = param[1];
+ fxTimesRhoPipe = param[0]*param[4];
+ } else if(imat==7) {
+ fxOverX0Shield[0] = param[1];
+ fxTimesRhoShield[0] = param[0]*param[4];
+ } else if(imat==8) {
+ fxOverX0Shield[1] = param[1];
+ fxTimesRhoShield[1] = param[0]*param[4];
+ }
+ }
+ /*
+ printf("%s\n",material.Data());
+ printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
+ printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
+ printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
+ printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
+ printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
+ printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
+ printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
+ printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
+ printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
+ */
+ return;
+}
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
+ TString direction) {
+ //-------------------------------------------------------------------
+ // Propagate beyond beam pipe and correct for material
+ // (material budget in different ways according to fUseTGeo value)
+ //-------------------------------------------------------------------
+
+ // Define budget mode:
+ // 0: material from AliITSRecoParam (hard coded)
+ // 1: material from TGeo (on the fly)
+ // 2: material from lut
+ // 3: material from TGeo (same for all hypotheses)
+ Int_t mode;
+ switch(fUseTGeo) {
+ case 0:
+ mode=0;
+ break;
+ case 1:
+ mode=1;
+ break;
+ case 2:
+ mode=2;
+ break;
+ case 3:
+ if(fTrackingPhase.Contains("Clusters2Tracks"))
+ { mode=3; } else { mode=1; }
+ break;
+ case 4:
+ if(fTrackingPhase.Contains("Clusters2Tracks"))
+ { mode=3; } else { mode=2; }
+ break;
+ default:
+ mode=0;
+ break;
+ }
+ if(fTrackingPhase.Contains("Default")) mode=0;
+
+ Int_t index=fCurrentEsdTrack;
+
+ Float_t dir = (direction.Contains("inward") ? 1. : -1.);
+ Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
+ Double_t xToGo; t->GetLocalXat(rToGo,xToGo);
+
+ Double_t xOverX0,x0,lengthTimesMeanDensity;
+ Bool_t anglecorr=kTRUE;
+
+ switch(mode) {
+ case 0:
+ xOverX0 = AliITSRecoParam::GetdPipe();
+ x0 = AliITSRecoParam::GetX0Be();
+ lengthTimesMeanDensity = xOverX0*x0;
+ break;
+ case 1:
+ if (!t->PropagateToTGeo(xToGo,1)) return 0;
+ return 1;
+ break;
+ case 2:
+ if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
+ xOverX0 = fxOverX0Pipe;
+ lengthTimesMeanDensity = fxTimesRhoPipe;
+ break;
+ case 3:
+ if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
+ if(fxOverX0PipeTrks[index]<0) {
+ if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
+ Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
+ (1.-t->GetSnp()*t->GetSnp()));
+ fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
+ fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
+ return 1;
+ }
+ xOverX0 = fxOverX0PipeTrks[index];
+ lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
+ break;
+ }
+
+ lengthTimesMeanDensity *= dir;
+
+ if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
+ if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
+
+ return 1;
+}
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
+ TString shield,
+ TString direction) {
+ //-------------------------------------------------------------------
+ // Propagate beyond SPD or SDD shield and correct for material
+ // (material budget in different ways according to fUseTGeo value)
+ //-------------------------------------------------------------------
+
+ // Define budget mode:
+ // 0: material from AliITSRecoParam (hard coded)
+ // 1: material from TGeo (on the fly)
+ // 2: material from lut
+ // 3: material from TGeo (same for all hypotheses)
+ Int_t mode;
+ switch(fUseTGeo) {
+ case 0:
+ mode=0;
+ break;
+ case 1:
+ mode=1;
+ break;
+ case 2:
+ mode=2;
+ break;
+ case 3:
+ if(fTrackingPhase.Contains("Clusters2Tracks"))
+ { mode=3; } else { mode=1; }
+ break;
+ case 4:
+ if(fTrackingPhase.Contains("Clusters2Tracks"))
+ { mode=3; } else { mode=2; }
+ break;
+ default:
+ mode=0;
+ break;
+ }
+ if(fTrackingPhase.Contains("Default")) mode=0;
+
+ Float_t dir = (direction.Contains("inward") ? 1. : -1.);
+ Double_t rToGo;
+ Int_t shieldindex=0;
+ if (shield.Contains("SDD")) { // SDDouter
+ rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
+ shieldindex=1;
+ } else if (shield.Contains("SPD")) { // SPDouter
+ rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
+ shieldindex=0;
+ } else {
+ Error("CorrectForShieldMaterial"," Wrong shield name\n");
+ return 0;
+ }
+ Double_t xToGo; t->GetLocalXat(rToGo,xToGo);
+
+ Int_t index=2*fCurrentEsdTrack+shieldindex;
+
+ Double_t xOverX0,x0,lengthTimesMeanDensity;
+ Bool_t anglecorr=kTRUE;
+
+ switch(mode) {
+ case 0:
+ xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
+ x0 = AliITSRecoParam::GetX0shield(shieldindex);
+ lengthTimesMeanDensity = xOverX0*x0;
+ break;
+ case 1:
+ if (!t->PropagateToTGeo(xToGo,1)) return 0;
+ return 1;
+ break;
+ case 2:
+ if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
+ xOverX0 = fxOverX0Shield[shieldindex];
+ lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
+ break;
+ case 3:
+ if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
+ if(fxOverX0ShieldTrks[index]<0) {
+ if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
+ Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
+ (1.-t->GetSnp()*t->GetSnp()));
+ fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
+ fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
+ return 1;
+ }
+ xOverX0 = fxOverX0ShieldTrks[index];
+ lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
+ break;
+ }
+
+ lengthTimesMeanDensity *= dir;
+
+ if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
+ if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
+
+ return 1;
+}
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
+ Int_t layerindex,
+ Double_t oldGlobXYZ[3],
+ TString direction) {
+ //-------------------------------------------------------------------
+ // Propagate beyond layer and correct for material
+ // (material budget in different ways according to fUseTGeo value)
+ //-------------------------------------------------------------------
+
+ // Define budget mode:
+ // 0: material from AliITSRecoParam (hard coded)
+ // 1: material from TGeo (on the fly)
+ // 2: material from lut
+ // 3: material from TGeo (same for all hypotheses)
+ Int_t mode;
+ switch(fUseTGeo) {
+ case 0:
+ mode=0;
+ break;
+ case 1:
+ mode=1;
+ break;
+ case 2:
+ mode=2;
+ break;
+ case 3:
+ if(fTrackingPhase.Contains("Clusters2Tracks"))
+ { mode=3; } else { mode=1; }
+ break;
+ case 4:
+ if(fTrackingPhase.Contains("Clusters2Tracks"))
+ { mode=3; } else { mode=2; }
+ break;
+ default:
+ mode=0;
+ break;
+ }
+ if(fTrackingPhase.Contains("Default")) mode=0;
+
+ Float_t dir = (direction.Contains("inward") ? 1. : -1.);
+
+ Double_t r=fgLayers[layerindex].GetR();
+ Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
+
+ Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
+ Double_t xToGo; t->GetLocalXat(rToGo,xToGo);
+
+ Int_t index=6*fCurrentEsdTrack+layerindex;
+
+ // Bring the track beyond the material
+ if (!t->AliExternalTrackParam::PropagateTo(xToGo,GetBz())) return 0;
+ Double_t globXYZ[3];
+ t->GetXYZ(globXYZ);
+
+ Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
+ Double_t mparam[7];
+ Bool_t anglecorr=kTRUE;
+
+ switch(mode) {
+ case 0:
+ xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
+ lengthTimesMeanDensity = xOverX0*x0;
+ break;
+ case 1:
+ AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
+ if(mparam[1]>900000) return 0;
+ xOverX0=mparam[1];
+ lengthTimesMeanDensity=mparam[0]*mparam[4];
+ anglecorr=kFALSE;
+ break;
+ case 2:
+ if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
+ xOverX0 = fxOverX0Layer[layerindex];
+ lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
+ break;
+ case 3:
+ if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
+ if(fxOverX0LayerTrks[index]<0) {
+ AliTracker::MeanMaterialBudget(oldGlobXYZ,globXYZ,mparam);
+ if(mparam[1]>900000) return 0;
+ Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
+ (1.-t->GetSnp()*t->GetSnp()));
+ xOverX0=mparam[1]/angle;
+ lengthTimesMeanDensity=mparam[0]*mparam[4]/angle;
+ fxOverX0LayerTrks[index] = TMath::Abs(xOverX0);
+ fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity);
+ }
+ xOverX0 = fxOverX0LayerTrks[index];
+ lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
+ break;
+ }
+
+ lengthTimesMeanDensity *= dir;
+
+ if (!t->CorrectForMeanMaterial(xOverX0,lengthTimesMeanDensity,anglecorr)) return 0;
+
+ return 1;
+}
+//------------------------------------------------------------------------
+void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
+ //-----------------------------------------------------------------
+ // Initialize LUT for storing material for each prolonged track
+ //-----------------------------------------------------------------
+ fxOverX0PipeTrks = new Float_t[ntracks];
+ fxTimesRhoPipeTrks = new Float_t[ntracks];
+ fxOverX0ShieldTrks = new Float_t[ntracks*2];
+ fxTimesRhoShieldTrks = new Float_t[ntracks*2];
+ fxOverX0LayerTrks = new Float_t[ntracks*6];
+ fxTimesRhoLayerTrks = new Float_t[ntracks*6];
+
+ for(Int_t i=0; i<ntracks; i++) {
+ fxOverX0PipeTrks[i] = -1.;
+ fxTimesRhoPipeTrks[i] = -1.;
+ }
+ for(Int_t j=0; j<ntracks*2; j++) {
+ fxOverX0ShieldTrks[j] = -1.;
+ fxTimesRhoShieldTrks[j] = -1.;
+ }
+ for(Int_t k=0; k<ntracks*6; k++) {
+ fxOverX0LayerTrks[k] = -1.;
+ fxTimesRhoLayerTrks[k] = -1.;
+ }
+
+ fNtracks = ntracks;
+
+ return;
+}
+//------------------------------------------------------------------------
+void AliITStrackerMI::DeleteTrksMaterialLUT() {
+ //-----------------------------------------------------------------
+ // Delete LUT for storing material for each prolonged track
+ //-----------------------------------------------------------------
+ if(fxOverX0PipeTrks) {
+ delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
+ }
+ if(fxOverX0ShieldTrks) {
+ delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
+ }
+
+ if(fxOverX0LayerTrks) {
+ delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
+ }
+ if(fxTimesRhoPipeTrks) {
+ delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
+ }
+ if(fxTimesRhoShieldTrks) {
+ delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
+ }
+ if(fxTimesRhoLayerTrks) {
+ delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
+ }
+ return;
+}
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::CheckSkipLayer(AliITStrackMI *track,
+ Int_t ilayer,Int_t idet) const {
+ //-----------------------------------------------------------------
+ // This method is used to decide whether to allow a prolongation
+ // without clusters, because we want to skip the layer.
+ // In this case the return value is > 0:
+ // return 1: the user requested to skip a layer
+ // return 2: track outside z acceptance of SSD/SDD and will cross both SPD
+ //-----------------------------------------------------------------
+
+ if (AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilayer)) return 1;
+
+ if (idet<0 && ilayer>1 && AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
+ // check if track will cross SPD outer layer
+ Double_t phiAtSPD2,zAtSPD2;
+ if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
+ if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
+ }
+ }
+
+ return 0;
+}
+//------------------------------------------------------------------------
+Int_t AliITStrackerMI::CheckDeadZone(/*AliITStrackMI *track,*/
+ Int_t ilayer,Int_t idet,
+ Double_t zmin,Double_t zmax/*,Double_t ymin,Double_t ymax*/) const {
+ //-----------------------------------------------------------------
+ // This method is used to decide whether to allow a prolongation
+ // without clusters, because there is a dead zone in the road.
+ // In this case the return value is > 0:
+ // return 1: dead zone at z=0,+-7cm in SPD
+ // return 2: dead area from the OCDB // NOT YET IMPLEMENTED
+ //-----------------------------------------------------------------
+
+ // check dead zones at z=0,+-7cm in the SPD
+ if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
+ Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
+ fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
+ fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
+ Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
+ fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
+ fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
+ for (Int_t i=0; i<3; i++)
+ if (zmin<zmaxdead[i] && zmax>zmindead[i]) return 1;
+ }
+
+ // check dead zones from OCDB
+ if (!AliITSReconstructor::GetRecoParam()->GetUseDeadZonesFromOCDB()) return 0;
+
+ if(idet<0) return 0;
+
+ // look in OCDB (only entire dead modules for the moment)
+ if (ilayer==0 || ilayer==1) { // SPD
+ AliCDBEntry* cdbEntry = AliCDBManager::Instance()->Get("ITS/Calib/SPDDead");
+ if (!cdbEntry) {
+ Error("CheckDeadZone","Cannot get CDB entry for SPD\n");
+ return 0;
+ }
+ TObjArray* spdEntry = (TObjArray*)cdbEntry->GetObject();
+ if (!spdEntry) {
+ Error("CheckDeadZone","Cannot get CDB entry for SPD\n");
+ return 0;
+ }
+ if(ilayer==1) idet += AliITSgeomTGeo::GetNLadders(1)*AliITSgeomTGeo::GetNDetectors(1);
+ //printf("SPD det: %d\n",idet);
+ AliITSCalibrationSPD *calibSPD = (AliITSCalibrationSPD*)spdEntry->At(idet);
+ if (calibSPD->IsBad()) return 2;
+ } else if (ilayer==2 || ilayer==3) { // SDD
+ AliCDBEntry* cdbEntry = AliCDBManager::Instance()->Get("ITS/Calib/CalibSDD");
+ if (!cdbEntry) {
+ Error("CheckDeadZone","Cannot get CDB entry for SDD\n");
+ return 0;
+ }
+ TObjArray* sddEntry = (TObjArray*)cdbEntry->GetObject();
+ if (!sddEntry) {
+ Error("CheckDeadZone","Cannot get CDB entry for SDD\n");
+ return 0;
+ }
+ if(ilayer==3) idet += AliITSgeomTGeo::GetNLadders(3)*AliITSgeomTGeo::GetNDetectors(3);
+ //printf("SDD det: %d\n",idet);
+ AliITSCalibrationSDD *calibSDD = (AliITSCalibrationSDD*)sddEntry->At(idet);
+ if (calibSDD->IsBad()) return 2;
+ } else if (ilayer==4 || ilayer==5) { // SSD
+ } else {
+ Error("CheckDeadZone","Wrong layer number\n");
+ if(ilayer==5) idet += AliITSgeomTGeo::GetNLadders(5)*AliITSgeomTGeo::GetNDetectors(5);
+ return 0;
+ }
+
+ return 0;
+}
+//------------------------------------------------------------------------
+Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
+ AliITStrackMI *track,
+ Float_t &xloc,Float_t &zloc) const {
+ //-----------------------------------------------------------------
+ // Gives position of track in local module ref. frame
+ //-----------------------------------------------------------------
+
+ xloc=0.;
+ zloc=0.;
+
+ if(idet<0) return kFALSE;
+
+ Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
+
+ Int_t lad = Int_t(idet/ndet) + 1;
+ Int_t det = idet - (lad-1)*ndet + 1;
+ Double_t xyzGlob[3],xyzLoc[3];
+ track->GetXYZ(xyzGlob);
+ AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc);
+ xloc = (Float_t)xyzLoc[0];
+ zloc = (Float_t)xyzLoc[2];
+ return kTRUE;
+}
+//------------------------------------------------------------------------
+Bool_t AliITStrackerMI::IsOKForPlaneEff(AliITStrackMI* track, Int_t ilayer) const {
+// Method still to be implemented:
+//
+// it will apply a pre-selection to obtain good quality tracks.
+// Here also you will have the possibility to put a control on the
+// impact point of the track on the basic block, in order to exclude border regions
+// this will be done by calling a proper method of the AliITSPlaneEff class.
+//
+// input: AliITStrackMI* track, ilayer= layer number [0,5]
+// output: Bool_t -> kTRUE 2f usable track, kFALSE if not usable.
+ if(!fPlaneEff)
+ {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
+ AliITSlayer &layer=fgLayers[ilayer];
+ Double_t r=layer.GetR();
+ //AliITStrackV2 tmp(*track);
+ AliITStrackMI tmp(*track);
+
+// detector number
+ Double_t phi,z;
+ if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
+ Int_t idet=layer.FindDetectorIndex(phi,z);
+ if(idet<0) { AliInfo(Form("cannot find detector"));
+ return kFALSE;}
+
+ // here check if it has good Chi Square.
+
+ //propagate to the intersection with the detector plane
+ const AliITSdetector &det=layer.GetDetector(idet);
+ if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
+
+ Float_t locx; //
+ Float_t locz; //
+ LocalModuleCoord(ilayer,idet,&tmp,locx,locz);
+ UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
+ if(key>fPlaneEff->Nblock()) return kFALSE;
+ Float_t blockXmn,blockXmx,blockZmn,blockZmx;
+ if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
+ // transform Local boundaries of the basic block into
+ // Global (i.e. ALICE, not tracking reference) coordinate
+ //
+ Double_t a1[3]={blockXmn,0.,blockZmn};
+ Double_t a2[3]={blockXmx,0.,blockZmn};
+ Double_t a3[3]={blockXmn,0.,blockZmx};
+ Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
+ Int_t lad = Int_t(idet/ndet) + 1;
+ Int_t hdet = idet - (lad-1)*ndet + 1;
+ Double_t xyzGlob[3];
+ AliITSgeomTGeo::LocalToGlobal(ilayer+1,lad,hdet,a1,a1);
+ AliITSgeomTGeo::LocalToGlobal(ilayer+1,lad,hdet,a2,a2);
+ AliITSgeomTGeo::LocalToGlobal(ilayer+1,lad,hdet,a3,a3);
+ Double_t gBlockYmn,gBlockYmx,gBlockZmn,gBlockZmx;
+ if(a1[1]>a2[1]) {gBlockYmn=a2[1]; gBlockYmx=a1[1];}
+ else {gBlockYmn=a1[1]; gBlockYmx=a2[1];}
+ if(a2[2]>a3[2]) {gBlockZmn=a3[2]; gBlockZmx=a2[2];}
+ else {gBlockZmn=a2[2]; gBlockZmx=a3[2];}
+ AliDebug(2,Form("Boundaries in Global system Ymin=%f, Ymax=%f, Zmin=%f, Zmax=%f",
+ gBlockYmn,gBlockYmx,gBlockZmn,gBlockZmx));
+
+ //***************
+ // DEFINITION OF SEARCH ROAD FOR accepting a track
+ //
+ //For the time being they are hard-wired, later on from AliITSRecoParam
+ Double_t dz=4.*TMath::Sqrt(tmp.GetSigmaZ2()); // those are precisions in the tracking reference system
+ Double_t dy=4.*TMath::Sqrt(tmp.GetSigmaY2()); // dy needs to be reduced (it is max now) if you do
+ // comparison in Global Reference system
+ Float_t gdz=dz;
+ Float_t gdy=dy*TMath::Abs(TMath::Cos(tmp.GetAlpha()));
+
+ // exclude tracks at boundary between detectors
+ //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
+ Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
+ AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
+ tmp.GetXYZ(xyzGlob);
+ AliDebug(2,Form("Global: track impact x=%f, y=%f, z=%f",xyzGlob[0],xyzGlob[1],xyzGlob[2]));
+ //AliInfo(Form("TEST GLOBAL track y = %f, z=%f",tmp.GetY(),tmp.GetZ()));
+ AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dy,dz));
+ AliDebug(2,Form("Search Road. Global: Gdy=%f , Gdz=%f",gdy,gdz));
+ if ( (xyzGlob[1]-gdy < gBlockYmn+boundaryWidth) ||
+ (xyzGlob[1]+gdy > gBlockYmx-boundaryWidth) ||
+ (xyzGlob[2]-gdz < gBlockZmn+boundaryWidth) ||
+ (xyzGlob[2]+gdz > gBlockZmx-boundaryWidth) ) return kFALSE;
+ return kTRUE;
+}
+//------------------------------------------------------------------------
+void AliITStrackerMI::UseTrackForPlaneEff(AliITStrackMI* track, Int_t ilayer) {
+//
+// This Method has to be optimized! For the time-being it uses the same criteria
+// as those used in the search of extra clusters for overlapping modules.
+//
+// Method Purpose: estabilish whether a track has produced a recpoint or not
+// in the layer under study (For Plane efficiency)
+//
+// inputs: AliITStrackMI* track (pointer to a usable track)
+// outputs: none
+// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
+// traversed by this very track. In details:
+// - if a cluster can be associated to the track then call
+// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
+// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
+//
+ if(!fPlaneEff)
+ {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
+ AliITSlayer &layer=fgLayers[ilayer];
+ Double_t r=layer.GetR();
+ //AliITStrackV2 tmp(*track);
+ AliITStrackMI tmp(*track);
+
+// detector number
+ Double_t phi,z;
+ if (!tmp.GetPhiZat(r,phi,z)) return;
+ Int_t idet=layer.FindDetectorIndex(phi,z);
+
+ if(idet<0) { AliInfo(Form("cannot find detector"));
+ return;}
+
+ //Double_t trackGlobXYZ1[3];
+ //tmp.GetXYZ(trackGlobXYZ1);
+
+//propagate to the intersection with the detector plane
+ const AliITSdetector &det=layer.GetDetector(idet);
+ if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
+
+ //Float_t xloc,zloc;
+
+//***************
+// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
+//
+ Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
+ TMath::Sqrt(tmp.GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
+ Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
+ TMath::Sqrt(tmp.GetSigmaY2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
+
+// road in global (rphi,z) [i.e. in tracking ref. system]
+ Double_t zmin = tmp.GetZ() - dz;
+ Double_t zmax = tmp.GetZ() + dz;
+ Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
+ Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
+
+// select clusters in road
+ layer.SelectClusters(zmin,zmax,ymin,ymax);
+
+// Define criteria for track-cluster association
+ Double_t msz = tmp.GetSigmaZ2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
+ Double_t msy = tmp.GetSigmaY2() +
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
+ AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
+ if (tmp.GetConstrain()) {
+ msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
+ msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
+ } else {
+ msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
+ msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
+ }
+ msz = 1./msz; // 1/RoadZ^2
+ msy = 1./msy; // 1/RoadY^2
+//
+
+ const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
+ Int_t idetc=-1;
+ Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
+ //Double_t tolerance=0.2;
+ /*while ((cl=layer.GetNextCluster(clidx))!=0) {
+ idetc = cl->GetDetectorIndex();
+ if(idet!=idetc) continue;
+ //Int_t ilay = cl->GetLayer();
+
+ if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
+ if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
+
+ Double_t chi2=tmp.GetPredictedChi2(cl);
+ if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
+ }*/
+ Float_t locx; //
+ Float_t locz; //
+ LocalModuleCoord(ilayer,idet,&tmp,locx,locz);
+//
+ AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
+ UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
+ if(key>fPlaneEff->Nblock()) return;
+ Bool_t found=kFALSE;
+ //if (ci>=0) {
+ Double_t chi2;
+ while ((cl=layer.GetNextCluster(clidx))!=0) {
+ idetc = cl->GetDetectorIndex();
+ if(idet!=idetc) continue;
+ // here real control to see whether the cluster can be associated to the track.
+ // cluster not associated to track
+ if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
+ (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
+ // calculate track-clusters chi2
+ chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
+ // in particular, the error associated to the cluster
+ //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
+ // chi2 cut
+ if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
+ found=kTRUE;
+ if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
+ // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
+ // track->SetExtraModule(ilayer,idetExtra);
+ }
+ if(!fPlaneEff->UpDatePlaneEff(found,key))
+ AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
+ if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
+ Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
+ Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
+ Int_t cltype[2]={-999,-999};
+ Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
+ Int_t lad = Int_t(idet/ndet) + 1;
+ Int_t hdet = idet - (lad-1)*ndet + 1;
+ Double_t xyzGlob[3],xyzLoc[3],cv[21],exyzLoc[3],exyzGlob[3];
+ if(tmp.GetXYZ(xyzGlob)) {
+ if (AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,hdet,xyzGlob,xyzLoc)) {
+ tr[0]=xyzLoc[0];
+ tr[1]=xyzLoc[2];
+ }
+ }
+ if(tmp.GetCovarianceXYZPxPyPz(cv)) {
+ exyzGlob[0]=TMath::Sqrt(cv[0]);
+ exyzGlob[1]=TMath::Sqrt(cv[2]);
+ exyzGlob[2]=TMath::Sqrt(cv[5]);
+ if (AliITSgeomTGeo::GlobalToLocalVect(AliITSgeomTGeo::GetModuleIndex(ilayer+1,lad,hdet),exyzGlob,exyzLoc)) {
+ tr[2]=TMath::Abs(exyzLoc[0]);
+ tr[3]=TMath::Abs(exyzLoc[2]);
+ }
+ }
+ if (found){
+ clu[0]=layer.GetCluster(ci)->GetDetLocalX();
+ clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
+ cltype[0]=layer.GetCluster(ci)->GetNy();
+ cltype[1]=layer.GetCluster(ci)->GetNz();
+
+ // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
+ // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
+ // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
+ // It is computed properly by calling the method
+ // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
+ // T
+ //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
+ //if (tmp.PropagateTo(x,0.,0.)) {
+ chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
+ AliCluster c(*layer.GetCluster(ci));
+ c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
+ c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
+ Float_t cov[6];
+ //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
+ if (c.GetGlobalCov(cov))
+ {
+ exyzGlob[0]=TMath::Sqrt(cov[0]);
+ exyzGlob[1]=TMath::Sqrt(cov[3]);
+ exyzGlob[2]=TMath::Sqrt(cov[5]);
+ if (AliITSgeomTGeo::GlobalToLocalVect(AliITSgeomTGeo::GetModuleIndex(ilayer+1,lad,hdet),exyzGlob,exyzLoc)) {
+ clu[2]=TMath::Abs(exyzLoc[0]);
+ clu[3]=TMath::Abs(exyzLoc[2]);
+ }
+ }
+ //}
+ }
+ fPlaneEff->FillHistos(key,found,tr,clu,cltype);
+ }
+return;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff